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Geometry

SequencesLessonsMaterialsVideos
  1. Math

Geometry

SequencesLessonsMaterialsVideos
SequencesLessonsMaterialsVideos

Geometric classification, measurement of area and volume, and the study of transformations and rigid motions. Builds toward complex proofs, trigonometry for general triangles, and the algebraic representation of conic sections.

Geometric Figures and RelationshipsProperties of 2D and 3D shapes, including symmetry, congruence, and similarity. Develops spatial reasoning through the study of angles, lines, and coordinate transformations.
Angle, Area, and VolumeGeometric properties including angle measurement, area of polygons, and volume of three-dimensional solids. Applies formulas and theorems to solve spatial reasoning problems.
Geometric MeasurementArea, perimeter, and volume calculations for two- and three-dimensional figures. Develops spatial reasoning through the application of measurement formulas and unit conversions.
Volume of 3D ShapesFormulas and calculations for determining the capacity of prisms, pyramids, cylinders, cones, and spheres. Develops spatial reasoning through applications involving cubic units and composite solids.
Coordinate Plane ApplicationsQuadrant navigation, distance calculations between points, and area determinations for polygons. Applies coordinate geometry to mapping, reflections, and data visualization.
Transformations in the PlaneTranslations, rotations, reflections, and dilations within the coordinate system. Examines congruence and similarity through geometric mapping and algebraic rules.
Congruence and SimilarityRigid transformations, scale factors, and proportional reasoning for identifying identical or scaled figures. Addresses triangle congruence criteria and similarity theorems for polygons.
Understand congruence in terms of rigid motionsTranslations, rotations, and reflections define geometric congruence through the exact mapping of figures. Examines how rigid motions preserve distance and angle measure to establish structural equality.
Similarity and TransformationsDilations and scale factors define similarity through proportional relationships and preserved angle measures. Examines sequences of rigid motions combined with resizing to map figures onto one another.
Prove Theorems Involving SimilarityGeometric proofs using AA, SAS, and SSS criteria to establish triangle similarity. Applies proportional reasoning to solve for unknown side lengths and verify the Pythagorean theorem through similar sub-triangles.
Pythagorean TheoremRelationship between the sides of right triangles using the formula a² + b² = c². Guides students through solving for missing side lengths and applying the theorem to real-world geometric problems.
Trigonometry for General TrianglesLaw of Sines and Law of Cosines applications for solving non-right triangles. Includes area formulas for oblique triangles and techniques for finding unknown side lengths and angles.
Make Geometric ConstructionsCompass and straightedge techniques for bisecting angles, segments, and constructing perpendicular lines. Develops precision through the creation of parallel lines and inscribed regular polygons.
Prove Geometric TheoremsLogical deduction and formal proof methods applied to lines, angles, and polygons. Builds mastery of axioms and postulates while establishing properties of congruence and similarity.
Theorems About CirclesRelationships between chords, secants, tangents, and inscribed angles. Establishes proofs for arc measures, segment lengths, and angle properties within circular geometry.
Find Arc Lengths And Areas of Sectors of CirclesCalculation of arc lengths and sector areas using central angles and radius measurements. Applies proportional reasoning to circular geometry in both degrees and radians.
Volume FormulasGeometric calculations for three-dimensional shapes including prisms, cylinders, pyramids, cones, and spheres. Develops skills for solving missing dimensions and real-world capacity problems.
Relationships Between Two-Dimensional and Three-Dimensional ObjectsCross-sections of three-dimensional solids and the generation of solids of revolution from two-dimensional shapes. Connects planar geometry to spatial visualization through nets and surface area calculations.
Prove Simple Geometric Theorems AlgebraicallyCoordinate geometry techniques, including the distance, midpoint, and slope formulas, verify properties of polygons. Establishes formal proofs for parallel and perpendicular lines within a coordinate plane.
Translate Between Geometric Description and Equation for Conic SectionDerivation of algebraic equations from geometric definitions including foci, directrices, and vertices. Connects visual properties of parabolas, ellipses, circles, and hyperbolas to their standard coordinate forms.
Apply Geometric Concepts in Modeling SituationsTranslates physical scenarios into geometric representations to solve optimization and design problems. Employs area, volume, and density calculations to analyze real-world objects and structures.
MathNumbers & CountingCounting ObjectsNumber NamesComparing NumbersNumber OperationsCounting SequenceNumbers 0-10Place Value Understanding and SystemAdd and Subtract Within 20Addition and Subtraction ConceptsAddition and Subtraction EquationsAddition and Subtraction ProblemsFoundations for MultiplicationMultiplication and Division PropertiesMultiply and Divide Within 100Multiplication and Division ProblemsFactors and MultiplesProperties of OperationsPatterns and RelationshipsGenerate and Analyze PatternsMulti-Digit ArithmeticPlace Value OperationsMulti-Digit and Decimal OperationsNumerical ExpressionsFour Operations and PatternsFour Operations Problem SolvingMeasurement & DataMeasurable AttributesMeasuring LengthsMeasure and Estimate Lengths in Standard UnitsRelate Addition and Subtraction to LengthClassifying and Counting ObjectsTime and MoneyArea Concepts and MeasurementPerimeter and Area MeasuresAngle Concepts and MeasurementTime, Volume, and MassMeasurement Unit ConversionsGeometryIdentifying ShapesShapes and AttributesShape Attributes and ReasoningShapes and CompositionClassifying 2D FiguresGeometric Figures and RelationshipsLines, Angles, and ShapesAngle, Area, and VolumeGeometric MeasurementVolume of 3D ShapesCoordinate Plane ApplicationsTransformations in the PlaneCongruence and SimilarityUnderstand congruence in terms of rigid motionsSimilarity and TransformationsProve Theorems Involving SimilarityPythagorean TheoremTrigonometry for General TrianglesMake Geometric ConstructionsProve Geometric TheoremsTheorems About CirclesFind Arc Lengths And Areas of Sectors of CirclesVolume FormulasRelationships Between Two-Dimensional and Three-Dimensional ObjectsProve Simple Geometric Theorems AlgebraicallyTranslate Between Geometric Description and Equation for Conic SectionApply Geometric Concepts in Modeling SituationsFractions & DecimalsFractions as NumbersBuilding FractionsFraction Equivalence and OrderingAdding and Subtracting FractionsMultiplying and Dividing FractionsDividing FractionsDecimal FractionsMulti-Digit Computation and FactorsAdd, Subtract, Multiply, and Divide Rational NumbersRational Number SystemIrrational Numbers and ApproximationsRatiosRatios and ProportionsProportional RelationshipsUnit RateAlgebraAlgebraic ExpressionsGenerate Equivalent ExpressionsQuantitative RelationshipsProportional Relationships and Linear EquationsEquations and InequalitiesEquation Solving and ReasoningLinear Equations and SystemsGraph Equations and InequalitiesSystems of EquationsReal-World Algebraic ProblemsQuantitative Reasoning with UnitsExpression StructureEquivalent Expression FormsRadicals and Integer ExponentsRational ExponentsRational and Irrational NumbersPolynomial OperationsPolynomial IdentitiesPolynomial Zeros and FactorsRational ExpressionsComplex Number OperationsComplex Numbers in PolynomialsComplex Numbers on PlaneStatistics & ProbabilityRepresent and Interpret DataData DistributionsStatistical VariabilityProbability ModelsCompound Event ProbabilitiesStatistical SamplingInterpret Categorical and Quantitative DataBivariate Data PatternsInterpret Linear ModelsComparing Two PopulationsRandom Processes in StatisticsIndependence and Conditional ProbabilityExpected ValuesProbability-Based Decision MakingStatistical Inference and ConclusionsFunctionsFunction Concepts and NotationDefine and Compare FunctionsInterpret Functions in ContextAnalyze Function RepresentationsModel Relationships with FunctionsIdentify Linear vs Exponential GrowthDistinguish Between Function TypesCompare Growth RatesInterpret Function ExpressionsBuild Functions from RelationshipsConstruct and Model FunctionsTransform and Combine FunctionsModel Comparison and SelectionSolve Exponential EquationsTrigonometryTrigonometric Ratios Involving Right TrianglesTrigonometric Functions and Unit CircleModel with Trigonometric FunctionsTrigonometric IdentitiesVectors & MatricesIntroduction to Vectors and MatricesVector QuantitiesVector OperationsMatrix OperationsCalculusLimits and ContinuityDerivative Concepts and NotationDerivative Rules and TechniquesApplications of DerivativesOptimization ProblemsRelated RatesCurve Sketching and AnalysisIntegration Concepts and NotationAntiderivatives and Indefinite IntegralsDefinite Integrals and AreaFundamental Theorem of CalculusIntegration TechniquesApplications of IntegrationDifferential EquationsSequences and SeriesParametric and Polar FunctionsVector-Valued Functions
Lesson
Titanic Trig Study Guide
Titanic Trig Flashcards Part 1
Titanic Trig Flashcards Part 2
Titanic Navigational Chart

Titanic Trigonometry

A maritime-themed lesson exploring trigonometry through the lens of the Titanic's maiden voyage. Students master unit circle coordinates and trigonometric values using historical figures and navigation scenarios.

J

jlaroux

Math Teacher
2/24
Lesson
Mirror Math Worksheet
Mirror Math Slides
Mirror Math Teacher Guide

Mirror Math

A hands-on exploration of inverse functions where students use folding and tracing to discover the visual relationship between a function and its inverse. The lesson emphasizes the reflection over the line y=x and the swapping of coordinate values.

Lenny Avatar
Lenny
1/19
Lesson
Reflection Point Slides
Reflection Lab Worksheet
Reflection Lab Rubric

Reflection Point

A 12th Grade/College Algebra lesson focused on the visual and algebraic relationship between functions and their inverses. Students use a 'Fold and Trace' activity to discover symmetry over the line y=x.

Lenny Avatar
Lenny
1/19
Lesson
Programmer Console Worksheet
Robot Vector Commands Slides
Grid Master Teacher Guide

Robot Vector Commands

A high-school geometry or pre-calculus lesson focusing on converting vectors from magnitude and direction to component form through a hands-on 'robot programming' simulation. Students use trigonometry to translate movement commands into x and y displacements.

Lenny Avatar
Lenny
1/19
Lesson
Orbital Outlines Presentation
Orbital Outlines Worksheet
Orbital Outlines Graph Paper
Orbital Outlines Teacher Guide

Orbital Outlines

An 11th grade Pre-Calculus lesson on ellipses, covering horizontal and vertical orientations, eccentricity calculations, and coordinate geometry through the lens of orbital mechanics and architecture.

Lenny Avatar
Lenny
1/19
Lesson
Teacher Facilitation Guide
Lesson Presentation Slides
Student Activity Worksheet
Answer Key Guide

The Extraneous Hunter

A comprehensive Pre-Calculus lesson focused on identifying domain restrictions and isolating extraneous solutions in complex rational equations through algebraic solving and graphical verification.

Lenny Avatar
Lenny
1/19
Lesson
Architect Guide Teacher Resource
Radius Blueprint Slides
Coordinate Builder Worksheet
Drafting Reflections Journal Prompts

Unit Circle Architect

Students will bridge the gap between special right triangle ratios and the Unit Circle by calculating coordinates for 30° and 60° angles using a hypotenuse of 1.

Lenny Avatar
Lenny
1/19
Lesson
Unit Circle Blueprint Anchor Chart
Unit Circle Lab Worksheet
Living Unit Circle Slides
Unit Circle Answer Key Teacher Resource

Living Unit Circle Construction

Students will collaboratively construct a large-scale unit circle identifying coordinate points for all six trigonometric functions through video analysis and poster construction.

Lenny Avatar
Lenny
1/19
Lesson
Radial Navigation Slides
Precision Estimators Worksheet
Radial Navigation Teacher Guide

Radial Navigation

This lesson introduces Pre-Calculus students to the visualization of rotational geometry. Students will learn to sketch angles in standard position by using quadrant boundaries and reference points, moving away from protractors toward logical estimation as a foundation for the Unit Circle.

Lenny Avatar
Lenny
1/19
Lesson
Vector Walks Slides
Vector Walks Worksheet
Complex Plane Grid Paper
Vector Walks Facilitator Guide

Vector Walks

A Pre-Calculus lesson connecting algebraic complex number addition to geometric vector addition on the complex plane using a 'Vector Walk' approach. Students visualize addition as head-to-tail movements on a grid.

Lenny Avatar
Lenny
1/19
Lesson
Chaos Coordinates Worksheet
Fractal Frontiers Presentation
Fractal Facilitation Guide
Chaos Coordinates Answer Key
Complex Plane Grid Paper
Complex Arithmetic Reference

Fractal Frontiers

An enrichment lesson for High School Math Club introducing the Mandelbrot set through manual iteration on the complex plane. Students learn to classify and plot complex numbers before exploring how simple iterative rules create infinite complexity.

Lenny Avatar
Lenny
1/19
Lesson
Unit Circle Teacher Guide
Coordinate Compass Presentation Slides
Triangle Tool Kit Printable
Unit Circle Blueprint Activity
Triangle Tempo Flashcards

The Coordinate Compass

Students bridge the gap between geometry and trigonometry by placing special right triangles within a unit circle. Through physical manipulation of scaled triangles, they derive the coordinates of the first quadrant and connect triangle side lengths to sine and cosine values.

Lenny Avatar
Lenny
1/19
Lesson
Loop Logic Presentation Slides
Polar Blueprint Paper
Loop Design Rubric
Logic Checkpoints Worksheet
Loop Logic Teacher Guide

Loop Logic

Students design a vertical roller coaster loop using polar coordinates and complex roots, exploring real-world applications of circular motion as seen in engineering and radar systems.

Lenny Avatar
Lenny
1/19
Lesson
Notation Navigation Teacher Guide
Notation Navigation Slides
Notation Navigation Handout
Notation Navigation Discussion Cards
Domain Definers Activity Sheet
Asymptote Reflection Journal Prompt
Notation Navigation Answer Key

Notation Navigation

Students will master the use of set notation to define the domain, range, and asymptotes of reciprocal trigonometric functions, specifically focusing on the patterns of integer multiples for cosecant and secant.

Lenny Avatar
Lenny
1/19
Lesson
Hyperbola Blueprints Teacher Guide
Hyperbola Blueprints Slides
Hyperbola Manual Project Template
Hyperbola Manual Rubric

Hyperbola Blueprints

A lesson focusing on identifying, graphing, and analyzing hyperbolas with shifted centers (h,k). Students will view instructional video content and create a 'User Manual' to demonstrate their mastery of the step-by-step graphing process.

Lenny Avatar
Lenny
1/19
Lesson
Dimensions of Distance Lesson Plan
Spatial Solver Activity
Dimensions of Distance Slides
Spatial Solver Answer Key

Dimensions of Distance

A Pre-Calculus lesson focused on extending 2D distance concepts into 3D space to calculate the distance between a point and a plane. Students use coordinate geometry and algebraic manipulation to solve spatial problems.

Lenny Avatar
Lenny
1/19
Lesson
Nonlinear Intersection Teacher Guide
Nonlinear Intersection Student Worksheet
Nonlinear Intersection Graphing Paper
Nonlinear Intersection Exit Ticket

Nonlinear Intersection Points

A comprehensive Pre-Calculus lesson on solving systems of nonlinear equations (linear and quadratic) using substitution, featuring a blueprint-themed set of materials including a guided worksheet, specialized graphing paper, and an exit ticket.

Lenny Avatar
Lenny
1/19
Lesson
Metric Matrix Slides
Warped Paths Guide
Geometry Final Review

Tensors and Non-Euclidean Metrics

An advanced introduction to the metric tensor and non-Euclidean geometry, serving as a primer for General Relativity.

Lenny Avatar
Lenny
1/18
Lesson
Spherical Symmetry Slides
Orbital Shapes Handout
Laplace Lab Worksheet

Spherical Separation of Variables

Students solve Laplace's equation for systems with spherical symmetry, introducing Legendre polynomials and Spherical Harmonics.

Lenny Avatar
Lenny
1/18
Lesson
Field Flow Slides
Operator Map Sheet
Vector Vortex Worksheet

Vector Operators in Curvilinear Space

Students translate the Del operator into general curvilinear coordinates and apply these operators to physical vector fields.

Lenny Avatar
Lenny
1/18
Lesson
Plumbing Formula Cheat Sheet
Pipe Power Math Test
Pipe Power Math Answer Key

Pipe Power Math

A comprehensive assessment and reference set for Tier 1 plumbing apprentices covering essential trade mathematics, including offsets, volumes, and conversions.

M

mbloomer

Other
3/2
Lesson
TSIA2 Math Practice Test
TSIA2 Math Answer Key

TSIA2 Math Mastery

A comprehensive practice session for the TSIA2 Math exam, focusing on quantitative reasoning, algebraic reasoning, geometry, and statistics.

JW

Jessica Waters

Math Teacher
2/20
Lesson
TSIA2 Math Practice Test
TSIA2 Math Answer Key

TSIA2 Math Mastery

A comprehensive 20-question practice test covering all four TSIA2 Math domains: Quantitative Reasoning, Algebraic Reasoning, Geometry, and Probability and Statistics.

JW

Jessica Waters

Math Teacher
2/20
Lesson
Spandrel Secrets Teacher Guide
Hidden Curves Slides
Negative Space Challenge Sheet
Negative Space Answer Key

Hidden Curves

Students explore the geometry of negative space through 'spandrels'—the shapes left over when curves are placed within polygons. This lesson uses algebraic decomposition and visual transformations to solve complex area problems, culminating in the creation of generalized formula sheets.

Lenny Avatar
Lenny
1/19
Lesson
Sexagesimal Secrets Slides
Calculator DMS Manual
DMS Practice Worksheet
Sexagesimal Teacher Guide

Sexagesimal Mastery

A lesson for undergraduate remedial math students on mastering the sexagesimal (base-60) system, covering historical context, manual conversion techniques, and modern calculator efficiency.

Lenny Avatar
Lenny
1/19
Lesson
Determinant Designs Facilitation Guide
Determinant Designs Slides
Shoelace Strategy Anchor Chart
Coordinate Combat Worksheet
Coordinate Combat Answer Key

Determinant Designs

Students will bridge the gap between coordinate geometry and linear algebra by connecting the Shoelace Algorithm to matrix determinants. This lesson uses a step-by-step video demonstration followed by algebraic verification of the 3x3 matrix area formula.

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Lenny
1/19
Lesson
Surface Solids Slides
Radial Revolution Lab
Radial Revolution Teacher Key

Surface Area Revolution

The sequence concludes with finding the surface area of solids formed by revolving polar curves around the polar axis or the line theta = pi/2.

Lenny Avatar
Lenny
1/18
Lesson
Polar Arc Length Slides
Spiral Shell Worksheet
Spiral Shell Teacher Key

Polar Arc Length

Students derive and apply the arc length formula for polar curves, calculating the distance along spirals and cardioids.

Lenny Avatar
Lenny
1/18
Lesson
Bounded Regions Slides
Shared Territory Worksheet
Bounded Regions Teacher Key

Bounded Polar Regions

Students find the area of regions shared by or bounded between two polar curves by identifying intersection points and setting up compound integrals.

Lenny Avatar
Lenny
1/18
Lesson
Inner Loop Slides
Lima\u00e7on Loop Lab
Inner Loop Teacher Key

Inner Loop Calculations

Focusing on lima\u00e7ons and rose curves, students learn to find integration limits by solving for r=0 and calculate the area of specific loops.

Lenny Avatar
Lenny
1/18
Lesson
Polar Area Slides
Sector Secrets Worksheet
Polar Area Teacher Key

Polar Area Formula

Students derive the polar area formula using circular sectors and apply it to find the area of simple polar regions. The lesson focuses on the transition from Riemann rectangles to radial wedges.

Lenny Avatar
Lenny
1/18
Lesson
Polar Escape Activity
Polar Escape Answer Key

Polar Calculus Capstone

A comprehensive workshop and escape-room style activity applying all polar calculus concepts to complex geometric problems.

Lenny Avatar
Lenny
1/18
Lesson
Polar Arc Length Slides
Arc Length Mastery Worksheet

Arc Length in Polar Coordinates

Derivation and application of the polar arc length formula to calculate the distance along curved polar paths.

Lenny Avatar
Lenny
1/18
Lesson
Compound Polar Area Slides
Compound Area Investigation Worksheet

Area Between Polar Curves

Calculating the area bounded by multiple polar curves by finding intersection points and setting up compound integrals.

Lenny Avatar
Lenny
1/18
Lesson
Area of Polar Regions Slides
Area Calculations Worksheet

Area of Polar Regions

Introduction to the polar area integral formula based on sector summation, applying it to find the area of simple closed polar loops.

Lenny Avatar
Lenny
1/18
Lesson
Slopes of Polar Curves Slides
Slope Investigation Worksheet

Slopes of Polar Curves

Students derive and apply the formula for dy/dx in polar coordinates, identifying horizontal and vertical tangent lines on complex polar graphs.

Lenny Avatar
Lenny
1/18
Lesson
Circle Labyrinth Challenge
Circle Labyrinth Slides
Circle Labyrinth Answer Key

Circle Labyrinth

A mastery-based finale where students navigate a complex 'Circle Labyrinth' by synthesizing all learned segment theorems.

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Lenny
1/18
Lesson
Pulley Power Slides
Pulley Power Worksheet
Pulley Power Answer Key

Pulley Power

Students apply circle theorems to find lengths of internal and external common tangents, utilizing auxiliary lines and the Pythagorean theorem.

Lenny Avatar
Lenny
1/18
Lesson
Tangent Transitions Slides
Secant-Tangent Modeling Task
Tangent Transitions Answer Key

Tangent Transitions

Students analyze the relationship between a tangent and a secant, solving problems that model real-world geometric constraints.

Lenny Avatar
Lenny
1/18
Lesson
Secant Stretches Slides
Secant Strategy Worksheet
Secant Strategy Answer Key

Secant Stretches

Students extend the Power of a Point concept to secants intersecting outside a circle, deriving the whole-times-external relationship.

Lenny Avatar
Lenny
1/18
Lesson
Plumbing Formula Cheat Sheet
Pipe Power Math Test
Pipe Power Math Answer Key

Pipe Power Math

A comprehensive assessment and reference set for Tier 1 plumbing apprentices covering essential trade mathematics, including offsets, volumes, and conversions.

M

mbloomer

Other
3/2
Lesson
Spatial Solutions Slides
Tiny House Blueprint Project Workbook
Design Justification Rubric

Applying Geometry to Design

In this culminating project, students solve a spatial design problem (the Tiny House Challenge), using geometric modeling to justify their layout and material choices.

Lenny Avatar
Lenny
1/18
Lesson
Efficiency Engine Slides
Can Cooler Lab Worksheet
Can Cooler Answer Key

Optimizing Surface Area and Volume

Students investigate the relationship between surface area and volume, exploring heat retention, cooling fins, and container efficiency through the lens of geometry.

Lenny Avatar
Lenny
1/18
Lesson
Solid Structures Slides
Castle Component Workshop Worksheet
Castle Component Answer Key

Decomposing Composite 3D Figures

Students break down complex machine parts or architectural shapes into simple solids like prisms and cylinders to calculate total volume or surface area.

Lenny Avatar
Lenny
1/18
Lesson
Isometric Insight Slides
Dot Grid Draftsman Worksheet
Dot Grid Draftsman Reference Key

Drawing Isometric Perspectives

Learners practice drawing objects on isometric dot paper to maintain scale and proportion, comparing this view to standard perspective drawing to understand its utility in technical communication.

Lenny Avatar
Lenny
1/18
Lesson
Blueprint Basics Slides
Multiview Mastery Worksheet
Multiview Mastery Answer Key

Interpreting Orthographic Projections

Students learn to draw and interpret 'multiview' sketches (top, front, side) of 3D objects, understanding how 3D information is compressed into 2D plans for engineering and manufacturing.

Lenny Avatar
Lenny
1/18
Lesson
Metric Matrix Slides
Warped Paths Guide
Geometry Final Review

Tensors and Non-Euclidean Metrics

An advanced introduction to the metric tensor and non-Euclidean geometry, serving as a primer for General Relativity.

Lenny Avatar
Lenny
1/18
Lesson
Spherical Symmetry Slides
Orbital Shapes Handout
Laplace Lab Worksheet

Spherical Separation of Variables

Students solve Laplace's equation for systems with spherical symmetry, introducing Legendre polynomials and Spherical Harmonics.

Lenny Avatar
Lenny
1/18
Lesson
Field Flow Slides
Operator Map Sheet
Vector Vortex Worksheet

Vector Operators in Curvilinear Space

Students translate the Del operator into general curvilinear coordinates and apply these operators to physical vector fields.

Lenny Avatar
Lenny
1/18
Lesson
Space Sculpting Slides
Jacobian Jigsaw Activity
Space Sculpting Key

Volume and Integration

Focusing on integration, students construct volume and area elements (Jacobians) for spherical and cylindrical geometries and practice integrating scalar fields over complex 3D domains.

Lenny Avatar
Lenny
1/18
Lesson
Curvilinear Blueprint Slides
Scale Factor Sprint Worksheet
Coordinate Coach Guide

Generalizing Coordinates

Students derive basis vectors and scale factors for general orthogonal curvilinear coordinates and learn how to define position vectors in non-Cartesian geometries.

Lenny Avatar
Lenny
1/18
Lesson
Surface Solids Slides
Radial Revolution Lab
Radial Revolution Teacher Key

Surface Area Revolution

The sequence concludes with finding the surface area of solids formed by revolving polar curves around the polar axis or the line theta = pi/2.

Lenny Avatar
Lenny
1/18
Lesson
Polar Arc Length Slides
Spiral Shell Worksheet
Spiral Shell Teacher Key

Polar Arc Length

Students derive and apply the arc length formula for polar curves, calculating the distance along spirals and cardioids.

Lenny Avatar
Lenny
1/18
Lesson
Bounded Regions Slides
Shared Territory Worksheet
Bounded Regions Teacher Key

Bounded Polar Regions

Students find the area of regions shared by or bounded between two polar curves by identifying intersection points and setting up compound integrals.

Lenny Avatar
Lenny
1/18
Lesson
Inner Loop Slides
Lima\u00e7on Loop Lab
Inner Loop Teacher Key

Inner Loop Calculations

Focusing on lima\u00e7ons and rose curves, students learn to find integration limits by solving for r=0 and calculate the area of specific loops.

Lenny Avatar
Lenny
1/18
Lesson
Polar Area Slides
Sector Secrets Worksheet
Polar Area Teacher Key

Polar Area Formula

Students derive the polar area formula using circular sectors and apply it to find the area of simple polar regions. The lesson focuses on the transition from Riemann rectangles to radial wedges.

Lenny Avatar
Lenny
1/18
Lesson
The Design Defense Slides
Design Defense Organizer
Design Defense Rubric

Optimization Design Defense

Students present their optimized packaging solutions for a specific product scenario. They must show their calculus work, justify their dimensions using derivative tests, and explain the trade-offs between form factor and material efficiency.

Lenny Avatar
Lenny
1/18
Lesson
Cost Minimization Slides
The 355ml Challenge Worksheet
Substitution Optimization Guide

Minimizing Material Costs

The scenario shifts from maximizing volume to minimizing surface area (cost) for a fixed volume requirement. Students set up new constraint equations and objective functions, learning to substitute variables to create a differentiable function of one variable.

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Lenny
1/18
Lesson
Optimization Calculus Slides
The Calculus Solution Worksheet
The Calculus Solution Key

Applying Derivatives

Students apply the power rule to differentiate their volume functions and solve for critical points where the derivative equals zero. They verify these critical points using the first derivative test to mathematically prove which dimensions yield the absolute maximum volume.

Lenny Avatar
Lenny
1/18
Lesson
Algebraic Modeling Slides
Algebraic Modeling Worksheet
Algebraic Modeling Answer Key

The Algebraic Model

Students translate their physical box models into algebraic functions, expressing volume in terms of a single variable. They identify the domain constraints and graph the function.

Lenny Avatar
Lenny
1/18
Lesson
Plumbing Formula Cheat Sheet
Pipe Power Math Test
Pipe Power Math Answer Key

Pipe Power Math

A comprehensive assessment and reference set for Tier 1 plumbing apprentices covering essential trade mathematics, including offsets, volumes, and conversions.

M

mbloomer

Other
3/2
Lesson
TSIA2 Math Practice Test
TSIA2 Math Answer Key

TSIA2 Math Mastery

A comprehensive practice session for the TSIA2 Math exam, focusing on quantitative reasoning, algebraic reasoning, geometry, and statistics.

JW

Jessica Waters

Math Teacher
2/20
Lesson
TSIA2 Math Practice Test
TSIA2 Math Answer Key

TSIA2 Math Mastery

A comprehensive 20-question practice test covering all four TSIA2 Math domains: Quantitative Reasoning, Algebraic Reasoning, Geometry, and Probability and Statistics.

JW

Jessica Waters

Math Teacher
2/20
Lesson
Target TSIA2 Math Worksheet
Target TSIA2 Math Key

TSIA2 Target Practice

A comprehensive 20-question practice test and answer key designed to prepare students for the TSIA2 Mathematics assessment, focusing on algebraic, geometric, and statistical reasoning.

JW

Jessica Waters

Math Teacher
1/21
Lesson
Spandrel Secrets Teacher Guide
Hidden Curves Slides
Negative Space Challenge Sheet
Negative Space Answer Key

Hidden Curves

Students explore the geometry of negative space through 'spandrels'—the shapes left over when curves are placed within polygons. This lesson uses algebraic decomposition and visual transformations to solve complex area problems, culminating in the creation of generalized formula sheets.

Lenny Avatar
Lenny
1/19
Lesson
Dimension Shift Worksheet
Dimension Shift Slides
Dimension Shift Discussion Cards
Dimension Shift Answer Key

Dimension Shift

A high-school level exploration of coordinate geometry that extends 2D distance concepts into 3D space and introduces the point-to-line distance formula for optimization problems. Students will visualize spatial diagonals and solve real-world distance challenges.

Lenny Avatar
Lenny
1/19
Lesson
Matrix Decoder Worksheet
Determinant Pulse Check Exit Ticket
Matrix Mastermind Slides

Matrix Mastermind Introduction to Determinants

This lesson introduces students to the determinant of 2x2 matrices. Students will learn the calculation formula, practice with various examples, explore matrices with a determinant of zero, and understand the geometric interpretation of a determinant as the area of a parallelogram.

Lenny Avatar
Lenny
1/19
Lesson
Human Unit Circle Field Guide
Human Unit Circle Slides
Human Unit Circle Teacher Notes

The Human Unit Circle

A kinesthetic pre-calculus lesson where students physically construct a large-scale unit circle to verify trigonometric coordinates through measurement and movement.

Lenny Avatar
Lenny
1/19
Lesson
Spatial Solutions Slides
Tiny House Blueprint Project Workbook
Design Justification Rubric

Applying Geometry to Design

In this culminating project, students solve a spatial design problem (the Tiny House Challenge), using geometric modeling to justify their layout and material choices.

Lenny Avatar
Lenny
1/18
Lesson
Efficiency Engine Slides
Can Cooler Lab Worksheet
Can Cooler Answer Key

Optimizing Surface Area and Volume

Students investigate the relationship between surface area and volume, exploring heat retention, cooling fins, and container efficiency through the lens of geometry.

Lenny Avatar
Lenny
1/18
Lesson
Solid Structures Slides
Castle Component Workshop Worksheet
Castle Component Answer Key

Decomposing Composite 3D Figures

Students break down complex machine parts or architectural shapes into simple solids like prisms and cylinders to calculate total volume or surface area.

Lenny Avatar
Lenny
1/18
Lesson
Isometric Insight Slides
Dot Grid Draftsman Worksheet
Dot Grid Draftsman Reference Key

Drawing Isometric Perspectives

Learners practice drawing objects on isometric dot paper to maintain scale and proportion, comparing this view to standard perspective drawing to understand its utility in technical communication.

Lenny Avatar
Lenny
1/18
Lesson
Blueprint Basics Slides
Multiview Mastery Worksheet
Multiview Mastery Answer Key

Interpreting Orthographic Projections

Students learn to draw and interpret 'multiview' sketches (top, front, side) of 3D objects, understanding how 3D information is compressed into 2D plans for engineering and manufacturing.

Lenny Avatar
Lenny
1/18
Lesson
Metric Matrix Slides
Warped Paths Guide
Geometry Final Review

Tensors and Non-Euclidean Metrics

An advanced introduction to the metric tensor and non-Euclidean geometry, serving as a primer for General Relativity.

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Lenny
1/18
Lesson
Spherical Symmetry Slides
Orbital Shapes Handout
Laplace Lab Worksheet

Spherical Separation of Variables

Students solve Laplace's equation for systems with spherical symmetry, introducing Legendre polynomials and Spherical Harmonics.

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Lenny
1/18
Lesson
Field Flow Slides
Operator Map Sheet
Vector Vortex Worksheet

Vector Operators in Curvilinear Space

Students translate the Del operator into general curvilinear coordinates and apply these operators to physical vector fields.

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Lenny
1/18
Lesson
Space Sculpting Slides
Jacobian Jigsaw Activity
Space Sculpting Key

Volume and Integration

Focusing on integration, students construct volume and area elements (Jacobians) for spherical and cylindrical geometries and practice integrating scalar fields over complex 3D domains.

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Lenny
1/18
Lesson
Curvilinear Blueprint Slides
Scale Factor Sprint Worksheet
Coordinate Coach Guide

Generalizing Coordinates

Students derive basis vectors and scale factors for general orthogonal curvilinear coordinates and learn how to define position vectors in non-Cartesian geometries.

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Lenny
1/18
Lesson
Workshop Problem Pack
Error Analysis Critique Sheet
Radial Mastery Assessment Key

Mastery Workshop

A synthesis session where students tackle complex problems combining slope, tangency, and coordinate conversion, including peer review and error analysis.

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Lenny
1/18
Lesson
Surface Solids Slides
Radial Revolution Lab
Radial Revolution Teacher Key

Surface Area Revolution

The sequence concludes with finding the surface area of solids formed by revolving polar curves around the polar axis or the line theta = pi/2.

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Lenny
1/18
Lesson
Circle Labyrinth Challenge
Circle Labyrinth Slides
Circle Labyrinth Answer Key

Circle Labyrinth

A mastery-based finale where students navigate a complex 'Circle Labyrinth' by synthesizing all learned segment theorems.

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Lenny
1/18
Lesson
Pulley Power Slides
Pulley Power Worksheet
Pulley Power Answer Key

Pulley Power

Students apply circle theorems to find lengths of internal and external common tangents, utilizing auxiliary lines and the Pythagorean theorem.

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Lenny
1/18
Lesson
Tangent Transitions Slides
Secant-Tangent Modeling Task
Tangent Transitions Answer Key

Tangent Transitions

Students analyze the relationship between a tangent and a secant, solving problems that model real-world geometric constraints.

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Lenny
1/18
Lesson
Secant Stretches Slides
Secant Strategy Worksheet
Secant Strategy Answer Key

Secant Stretches

Students extend the Power of a Point concept to secants intersecting outside a circle, deriving the whole-times-external relationship.

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Lenny
1/18
Lesson
Chord Crossings Slides
Chord Discovery Worksheet
Chord Discovery Answer Key

Chord Crossings

Students discover the Intersecting Chords Theorem through similarity and apply it to solve geometric problems involving linear and quadratic equations.

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Lenny
1/18
Lesson
Space Inversion Slides
Geometric Mirror Teacher Guide
The Inversion Lab Worksheet
Circle Power Answer Key

Orthogonal Circles and Inversion

Applies Power of a Point to understand orthogonal circles and the transformational geometry of inversion.

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Lenny
1/18
Lesson
Three Circle Nexus Slides
Nexus Navigation Teacher Guide
Radical Center Challenge Worksheet

Radical Center and Coaxial Circles

Explores the concurrency of radical axes at the radical center and examines systems of coaxial circles.

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Lenny
1/18
Lesson
Neutral Ground Slides
Locus Logic Teacher Guide
Radical Axis Map Worksheet

The Radical Axis

Defines the radical axis as a locus of equal power and investigates its properties relative to two circles.

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Lenny
1/18
Lesson
Unified Circle Metrics Slides
Metric Bridges Teacher Guide
The Similarity Link Worksheet

Unifying Segments

Proves the unity of chord, secant, and tangent theorems using similar triangles and generalizes the formula for all line-circle intersections.

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Lenny
1/18
Lesson
Invariant Power Slides
Point Power Teacher Guide
Invariant Product Activity

Defining Power of a Point

Introduces the scalar 'Power of a Point' relative to a circle and explores the invariance of segment products through chords and secants.

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Lenny
1/18
Lesson
Circle Chord Power Slides
Circle Chord Mastery Worksheet

Applications to Circle Chords

Apply similarity principles to prove the Power of a Point theorem for chords, secants, and tangents.

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Lenny
1/17
Lesson
Pythagorean Proof Showdown Slides
Pythagorean Proof Analysis Worksheet

Rigorous Proofs of the Pythagorean Theorem

Critically analyze and reconstruct different proofs of the Pythagorean Theorem, focusing on Euclid's Windmill and similarity-based methods.

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Lenny
1/17
Lesson
Geometric Mean Slides
Geometric Mean Workshop Worksheet

Geometric Mean and Right Triangles

Analyze similarity in right triangles and prove the geometric mean theorems relating the altitude and legs.

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Lenny
1/17
Lesson
Similarity Mapping Slides
Similarity Transformation Lab Worksheet

Establishing Similarity Criteria

Formally prove AA, SAS, and SSS similarity criteria using transformations and dilations.

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Lenny
1/17
Lesson
Thales Projection Slides
Proportionality Proof Workshop Worksheet

Parallel Projections and Thales' Theorem

Explore the proportionality of segments cut by parallel lines and prove Thales' Basic Proportionality Theorem.

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Lenny
1/17
Lesson
Between Dimensions Slides
Dimension Hunter Lab Worksheet
Fractal Horizons Final Key

Fractal Dimension and Hausdorff Measure

Students calculate the fractal dimension of self-similar sets using scaling properties. They are introduced to the Hausdorff measure and conceptualize how dimension can be a non-integer, resolving the 'Coastline Paradox'.

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Lenny
1/17
Lesson
Between Dimensions Slides
Dimension Hunter Lab Worksheet

Fractal Dimension and Hausdorff Measure

Students calculate the fractal dimension of self-similar sets using scaling properties. They are introduced to the Hausdorff measure and conceptualize how dimension can be a non-integer, resolving the 'Coastline Paradox'.

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Lenny
1/17
Lesson
Circle Similarity Slides
Circle Similarity Teacher Guide
Circle Invariants Worksheet

Power of a Point and Cyclic Quadrilaterals

Students apply similarity criteria to prove the Power of a Point theorems (Tangent-Secant and Secant-Secant). The lesson culminates in proving Ptolemy's Theorem using similar triangles within cyclic quadrilaterals.

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Lenny
1/17
Lesson
Infinite Loop Slides
Chaos Game Discovery Worksheet

Iterated Function Systems (IFS)

Students explore what happens when contraction mappings are applied recursively. They generate fractals like the Sierpinski Triangle using multiple similarity transformations, introducing the concept of self-similarity and the 'Chaos Game' algorithm.

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Lenny
1/17
Lesson
Scaling Giants Slides
BioMath Scaling Problem Set

Scaling Laws Area and Volume

This lesson investigates the relationship between length scale factors (k) and the resulting area (k²) and volume (k³). Students apply these scaling laws to biological and physical contexts, such as allometry and structural limits.

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Lenny
1/17
Lesson
Target TSIA2 Math Worksheet
Target TSIA2 Math Key

TSIA2 Target Practice

A comprehensive 20-question practice test and answer key designed to prepare students for the TSIA2 Mathematics assessment, focusing on algebraic, geometric, and statistical reasoning.

JW

Jessica Waters

Math Teacher
1/21
Lesson
Mirror Math Worksheet
Mirror Math Slides
Mirror Math Teacher Guide

Mirror Math

A hands-on exploration of inverse functions where students use folding and tracing to discover the visual relationship between a function and its inverse. The lesson emphasizes the reflection over the line y=x and the swapping of coordinate values.

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Lenny
1/19
Lesson
Reflection Point Slides
Reflection Lab Worksheet
Reflection Lab Rubric

Reflection Point

A 12th Grade/College Algebra lesson focused on the visual and algebraic relationship between functions and their inverses. Students use a 'Fold and Trace' activity to discover symmetry over the line y=x.

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Lenny
1/19
Lesson
Programmer Console Worksheet
Robot Vector Commands Slides
Grid Master Teacher Guide

Robot Vector Commands

A high-school geometry or pre-calculus lesson focusing on converting vectors from magnitude and direction to component form through a hands-on 'robot programming' simulation. Students use trigonometry to translate movement commands into x and y displacements.

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Lenny
1/19
Lesson
Radial Navigation Slides
Precision Estimators Worksheet
Radial Navigation Teacher Guide

Radial Navigation

This lesson introduces Pre-Calculus students to the visualization of rotational geometry. Students will learn to sketch angles in standard position by using quadrant boundaries and reference points, moving away from protractors toward logical estimation as a foundation for the Unit Circle.

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Lenny
1/19
Lesson
Vector Walks Slides
Vector Walks Worksheet
Complex Plane Grid Paper
Vector Walks Facilitator Guide

Vector Walks

A Pre-Calculus lesson connecting algebraic complex number addition to geometric vector addition on the complex plane using a 'Vector Walk' approach. Students visualize addition as head-to-tail movements on a grid.

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Lenny
1/19
Lesson
Collision Course Slides
Collision Course Worksheet

Symmetry and Intersection of Polar Graphs

The sequence concludes with advanced graphing analysis involving symmetry tests and finding intersection points. Students learn why algebraic solutions sometimes miss intersection points at the pole.

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Lenny
1/18
Lesson
Complex Curves Slides Space Snail and Roses
Curve Collector Worksheet

Analyzing Roses and Lima\u00e7ons

Students systematically explore classical polar curves. They analyze the effect of coefficients on the number of petals in rose curves and the presence of inner loops in lima\u00e7ons.

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Lenny
1/18
Lesson
Basic Curves Slides
Simple Shapes Worksheet

Graphing Basic Polar Curves

An investigation into circles and lines in the polar plane. Students predict and verify the graphs of equations like r = a, theta = b, and r = a cos(theta), establishing a foundation for more complex shapes.

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Lenny
1/18
Lesson
System Switch Slides
System Switch Worksheet

Converting Between Polar and Cartesian Systems

Students derive the conversion formulas using right triangle trigonometry. They practice converting both coordinates and full equations, identifying when a polar form offers a simpler representation than the Cartesian equivalent.

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Lenny
1/18
Lesson
Function Fusion Slides
Transformation Tracker Worksheet
Graphing Gauntlet Activity
Function Fusion Teacher Guide

Function Fusion

Combine all parameters to model complex periodic behaviors and write full equations for given graphs.

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Lenny
1/18
Lesson
Shift and Slide Slides
Shift Sleuths Worksheet
Shift and Slide Teacher Guide

Shift and Slide

Learn to identify and calculate horizontal translations (the 'C' parameter or phase shift) in trigonometric equations.

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Lenny
1/18
Lesson
Pulse and Period Slides
Heartbeat Harmonics Worksheet
Pulse and Period Teacher Guide

Pulse and Period

Investigate horizontal stretches and compressions (the 'B' parameter) to understand the relationship between period and frequency.

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Lenny
1/18
Lesson
Volume Up Amplitude Slides
Amplitude Arena Worksheet
Volume Up Amplitude Teacher Guide

Volume Up Amplitude

Analyze vertical stretches and compressions (the 'A' parameter) to determine the amplitude and range of periodic functions.

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Lenny
1/18
Lesson
Midline Blueprints Slides
Midline Mastery Worksheet
Midline Blueprints Teacher Guide

Midline Blueprints

Explore how vertical shifts (the 'D' parameter) move trigonometric graphs up and down, defining the midline of the function.

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Lenny
1/18
Lesson
Workshop Problem Pack
Error Analysis Critique Sheet
Radial Mastery Assessment Key

Mastery Workshop

A synthesis session where students tackle complex problems combining slope, tangency, and coordinate conversion, including peer review and error analysis.

Lenny Avatar
Lenny
1/18
Lesson
Radial Peak Slides
Limaçon Width Investigation Worksheet
Optimization Teacher Guide

Peak Polar Performance

Students apply derivatives to find maximum values of r (distance from origin) and y (height) to solve geometric optimization problems within polar contexts.

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Lenny
1/18
Lesson
Pole Tangent Slides
Rose Curve Petal Worksheet
Pole Behavior Teacher Guide

Passing the Pole

A focused lesson on finding tangent lines at the origin (the pole) by determining where r=0 and analyzing the behavior of rose curves and other polar functions.

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Lenny
1/18
Lesson
Radial Bounds Slides
Cardioid Boundary Investigation Worksheet
Horizontal Vertical Teacher Guide

Horizontal and Vertical Bounds

Students solve for theta values where dy/d-theta and dx/d-theta are zero to identify horizontal and vertical tangent lines on polar graphs, focusing on geometric interpretation.

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Lenny
1/18
Lesson
Radial Slope Slides
Product Rule Bridge Worksheet
Polar Slope Teacher Guide

Slope of the Circle

Students use the product rule and chain rule to derive the formula for dy/dx given r=f(theta). They learn to view x and y as parametric functions of theta to calculate the slope of the tangent line.

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Lenny
1/18
Lesson
Target TSIA2 Math Worksheet
Target TSIA2 Math Key

TSIA2 Target Practice

A comprehensive 20-question practice test and answer key designed to prepare students for the TSIA2 Mathematics assessment, focusing on algebraic, geometric, and statistical reasoning.

JW

Jessica Waters

Math Teacher
1/21
Lesson
Forbidden Polygons Slides
Constructibility Final Quiz

Impossibility Proofs

Students analyze the impossibility of trisecting angles and constructing 7-gons or 9-gons, focusing on the limitations imposed by cubic equations.

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Lenny
1/17
Lesson
Fermat Prime Slides
Construction Complexity Worksheet

Gauss and Fermat Primes

An exploration of the Gauss-Wantzel Theorem and Fermat primes, explaining why the 17-gon is constructible while others are not.

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Lenny
1/17
Lesson
Golden Ratio Slides
Pentagon Blueprint

The Golden Section and the Pentagon

Students derive the Golden Ratio algebraically and use it to construct a regular pentagon, linking algebraic solutions of quadratic equations to five-fold symmetry.

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Lenny
1/17
Lesson
Quadratic Compass Slides
Square Root Lab Handout
Quadratic Extensions Teacher Guide

Square Roots and Pythagorean Fields

Focusing on the geometric mean, students learn to construct square roots and analyze how compass operations correspond to quadratic field extensions.

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Lenny
1/17
Lesson
Algebraic Arithmetic Slides
Geometric Calculator Worksheet
Field Theory Teacher Notes

The Algebra of Segments

Students establish that the set of constructible numbers is closed under basic arithmetic operations (addition, subtraction, multiplication, division) by developing geometric methods for each.

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Lenny
1/17
Lesson
Modeling Nature Slides
Fractal Synthesis Guide

Modeling Natural Phenomena

Students apply their knowledge of similarity and dimension to model natural objects like coastlines, ferns, or lungs. They synthesize the sequence by creating a fractal model using similarity rules.

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Lenny
1/17
Lesson
Banach Contraction Slides
Fixed Point Problem Set

The Banach Contraction Principle

This lesson provides the theoretical foundation for fractal convergence. Students explore the Banach Contraction Principle and fixed-point theorems in complete metric spaces.

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Lenny
1/17
Lesson
Similarity Dimension Slides
Fractal Dimension Workshop

Similarity Dimension

Students derive and apply the similarity dimension formula to non-integer shapes like the Koch Snowflake and Sierpinski Gasket, exploring the logarithmic relationship between scaling and self-similarity.

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Lenny
1/17
Lesson
Sierpinski Limits Slides
Sierpinski Limit Worksheet

Sierpinski Gasket and Limits

Students analyze the Sierpinski Gasket through recursive triangle removal, calculating the limits of area and perimeter using geometric series. This lesson bridges similarity with infinite processes.

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Lenny
1/17
Lesson
Pipeline Perfection Slides
Orbit Matrix Handout
Pipeline Perfection Teacher Guide

Pipeline Perfection

Students calculate composite matrices to perform complex sequences (e.g., rotate around a specific point). They apply this to a simplified graphics pipeline scenario involving model-view-projection.

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Lenny
1/17
Lesson
Scaling the World Slides
Area Scale Lab Worksheet

Scaling the World

Students explore the geometric interpretation of the determinant as an area-scaling factor. They define similarity transformations in terms of scalar matrices and analyze how area and orientation change under various mappings.

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Lenny
1/17
Lesson
Rigid Motion Rules Slides
Rigid Motion Proofs Worksheet

Rigid Motion Rules

This lesson focuses on orthogonal matrices and their relationship to isometries. Students prove that matrices with determinant ±1 (and orthogonal columns) preserve distances and angles, formally linking linear algebra to congruence.

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Lenny
1/17
Lesson
The Translation Hack Slides
The Hack Lab Worksheet

The Translation Hack

Students address the limitation of linear algebra regarding translations by introducing homogeneous coordinates. They construct 3x3 matrices to represent 2D translations, allowing for a unified approach to all affine transformations.

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Lenny
1/17
Lesson
Basis Vector Ballet Worksheet
Basis Vector Ballet Slides
Basis Vector Ballet Teacher Guide

Basis Vector Ballet

Students review linear maps and visualize how basis vectors transform. They determine how specific matrices result in geometric scaling, rotation, and shearing relative to the origin.

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Lenny
1/17
Lesson
IFS Intro Slides
Chaos Game Activity
IFS Teacher Guide

Iterated Function Systems

Students are introduced to Iterated Function Systems (IFS) as a collection of contraction mappings. They manually apply transformations to visualize the emergence of an attractor.

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Lenny
1/17
Lesson
Fractal Frontier Slides

Applications to Fractal Geometry

Students apply the concept of iterative complex mappings to generate fractals like the Julia set. They explore how self-similarity arises from repeated application of similarity transformations.

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Lenny
1/17
Lesson
Matrix Similitude Slides

Matrices of Similarity Transformations

Students express similarity transformations using 2x2 matrices. They identify the specific form of matrices that preserve angles and scale lengths uniformly.

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Lenny
1/17
Lesson
Similarity Proofs Slides

Proving Triangle Similarity with Complex Numbers

Students translate the AA and SAS criteria into conditions involving complex numbers. They solve problems involving similar triangles by setting up equations in the complex plane.

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Lenny
1/17
Lesson
Spiral Similarities Slides
Composition Challenge Activity

Spiral Similarities

Students investigate spiral similarities, transformations that combine a homothety with a rotation. They prove that the composition of two homotheties with different centers results in a spiral similarity.

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Lenny
1/17
Lesson
Unit Circle Teacher Guide
Coordinate Compass Presentation Slides
Triangle Tool Kit Printable
Unit Circle Blueprint Activity
Triangle Tempo Flashcards

The Coordinate Compass

Students bridge the gap between geometry and trigonometry by placing special right triangles within a unit circle. Through physical manipulation of scaled triangles, they derive the coordinates of the first quadrant and connect triangle side lengths to sine and cosine values.

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Lenny
1/19
Lesson
Infinite Art Project Prompt
Series Blueprint Sheet
Geometric Art Rubric

Infinite Series Artistry

A culminating project where students design a piece of art or digital model based on a convergent series, calculating the theoretical limits of their design.

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Lenny
1/18
Lesson
Paradox Horn Slides
Infinite Paradox Worksheet
Horn Paradox Guide

Infinite Paint Paradox

Students examine the paradox of Gabriel's Horn (finite volume, infinite surface area) to connect improper integrals with infinite series concepts.

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Lenny
1/18
Lesson
Stacking Chaos Slides
Leaning Tower Lab Activity
Series Divergence Guide

The Stacking Paradox

A comparative lesson contrasting the divergent Harmonic series with convergent geometric series using stacking block simulations (the Leaning Tower of Lire).

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Lenny
1/18
Lesson
Fractal Wonders Slides
Fractal Math Worksheet
Fractal Exploration Guide

Fractal Math Wonders

Learners explore famous fractals like the Koch Snowflake and Sierpinski Triangle. They calculate perimeter and area using series concepts to understand self-similarity.

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Lenny
1/18
Lesson
Infinite Boundaries Slides
Area Adder Worksheet
Visual Convergence Guide

Visualizing Convergence

Students use geometric area models to visualize the convergence of infinite series. By shading squares and circles, they bridge the gap between algebraic limits and spatial reasoning.

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Lenny
1/18
Lesson
Animation Engine Project Guide
Animation Project Rubric
Geometric Engine Answer Key

Animation Engine Project

Apply matrix transformation logic to design a simple animation sequence for a digital object, mimicking graphics engine logic.

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Lenny
1/18
Lesson
Super Matrix Slides
Chain Reaction Activity

Composite Transformation Codes

Discover how to combine multiple transformations into a single composite matrix and explore the importance of operation order.

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Lenny
1/18
Lesson
Flip and Spin Slides
Transformation Reference Sheet
Matrix Mirror Worksheet

Flip and Spin Multiplication

Introduce rotation and reflection matrices and use matrix multiplication to reorient shapes in the 2D plane.

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Lenny
1/18
Lesson
Slide and Stretch Slides
Transformation Lab Worksheet

Slide and Stretch Operations

Explore how matrix addition performs translations and scalar multiplication performs dilations on geometric shapes.

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Lenny
1/18
Lesson
Vertex Vault Slides
Vertex Blueprint Worksheet

Vertex Vault Introduction

Students learn to represent the vertices of 2D shapes as columns in a matrix and explore how these arrays correspond to physical points on a coordinate plane.

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Lenny
1/18
Lesson
Circle Labyrinth Challenge
Circle Labyrinth Slides
Circle Labyrinth Answer Key

Circle Labyrinth

A mastery-based finale where students navigate a complex 'Circle Labyrinth' by synthesizing all learned segment theorems.

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Lenny
1/18
Lesson
Pulley Power Slides
Pulley Power Worksheet
Pulley Power Answer Key

Pulley Power

Students apply circle theorems to find lengths of internal and external common tangents, utilizing auxiliary lines and the Pythagorean theorem.

Lenny Avatar
Lenny
1/18
Lesson
Tangent Transitions Slides
Secant-Tangent Modeling Task
Tangent Transitions Answer Key

Tangent Transitions

Students analyze the relationship between a tangent and a secant, solving problems that model real-world geometric constraints.

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Lenny
1/18
Lesson
Secant Stretches Slides
Secant Strategy Worksheet
Secant Strategy Answer Key

Secant Stretches

Students extend the Power of a Point concept to secants intersecting outside a circle, deriving the whole-times-external relationship.

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Lenny
1/18
Lesson
Chord Crossings Slides
Chord Discovery Worksheet
Chord Discovery Answer Key

Chord Crossings

Students discover the Intersecting Chords Theorem through similarity and apply it to solve geometric problems involving linear and quadratic equations.

Lenny Avatar
Lenny
1/18
Lesson
Space Inversion Slides
Geometric Mirror Teacher Guide
The Inversion Lab Worksheet
Circle Power Answer Key

Orthogonal Circles and Inversion

Applies Power of a Point to understand orthogonal circles and the transformational geometry of inversion.

Lenny Avatar
Lenny
1/18
Lesson
Three Circle Nexus Slides
Nexus Navigation Teacher Guide
Radical Center Challenge Worksheet

Radical Center and Coaxial Circles

Explores the concurrency of radical axes at the radical center and examines systems of coaxial circles.

Lenny Avatar
Lenny
1/18
Lesson
Neutral Ground Slides
Locus Logic Teacher Guide
Radical Axis Map Worksheet

The Radical Axis

Defines the radical axis as a locus of equal power and investigates its properties relative to two circles.

Lenny Avatar
Lenny
1/18
Lesson
Unified Circle Metrics Slides
Metric Bridges Teacher Guide
The Similarity Link Worksheet

Unifying Segments

Proves the unity of chord, secant, and tangent theorems using similar triangles and generalizes the formula for all line-circle intersections.

Lenny Avatar
Lenny
1/18
Lesson
Mirror Math Worksheet
Mirror Math Slides
Mirror Math Teacher Guide

Mirror Math

A hands-on exploration of inverse functions where students use folding and tracing to discover the visual relationship between a function and its inverse. The lesson emphasizes the reflection over the line y=x and the swapping of coordinate values.

Lenny Avatar
Lenny
1/19
Lesson
Reflection Point Slides
Reflection Lab Worksheet
Reflection Lab Rubric

Reflection Point

A 12th Grade/College Algebra lesson focused on the visual and algebraic relationship between functions and their inverses. Students use a 'Fold and Trace' activity to discover symmetry over the line y=x.

Lenny Avatar
Lenny
1/19
Lesson
Animation Engine Project Guide
Animation Project Rubric
Geometric Engine Answer Key

Animation Engine Project

Apply matrix transformation logic to design a simple animation sequence for a digital object, mimicking graphics engine logic.

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Lenny
1/18
Lesson
Super Matrix Slides
Chain Reaction Activity

Composite Transformation Codes

Discover how to combine multiple transformations into a single composite matrix and explore the importance of operation order.

Lenny Avatar
Lenny
1/18
Lesson
Flip and Spin Slides
Transformation Reference Sheet
Matrix Mirror Worksheet

Flip and Spin Multiplication

Introduce rotation and reflection matrices and use matrix multiplication to reorient shapes in the 2D plane.

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Lenny
1/18
Lesson
Slide and Stretch Slides
Transformation Lab Worksheet

Slide and Stretch Operations

Explore how matrix addition performs translations and scalar multiplication performs dilations on geometric shapes.

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Lenny
1/18
Lesson
Vertex Vault Slides
Vertex Blueprint Worksheet

Vertex Vault Introduction

Students learn to represent the vertices of 2D shapes as columns in a matrix and explore how these arrays correspond to physical points on a coordinate plane.

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Lenny
1/18
Lesson
Complex Treasure Hunt Slides
Voyager's Final Map Activity

Complex Treasure Hunt

Students tackle complex problems requiring them to toggle between algebraic manipulation and geometric intuition. The final activity involves solving a puzzle where clues are given in both algebraic and vector formats.

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Lenny
1/17
Lesson
Mirror Worlds Slides
Reflection Lab Worksheet

Mirror Worlds

This lesson focuses on the geometric meaning of the complex conjugate as a reflection across the real axis. Students explore why multiplying a number by its conjugate produces a real number, laying the groundwork for division.

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Lenny
1/17
Lesson
Spiraling Out Slides
Spiral Explorer Activity

Spiraling Out

Students investigate patterns in the moduli and arguments of complex numbers when multiplied. Through guided discovery, they conclude that multiplication involves scaling lengths and adding angles.

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Lenny
1/17
Lesson
Vector Translations Slides
Vector Voyage Log Worksheet

Vector Translations

Learners represent complex numbers as vectors to visualize addition and subtraction. They verify algebraic results using the parallelogram rule on graph paper, connecting linear algebra concepts to complex arithmetic.

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Lenny
1/17
Lesson
Plane Plotters Worksheet
Rotation Revolution Slides

Rotation Revolution

Students explore the concept of multiplication by negative one as a 180-degree rotation and hypothesize what a 90-degree rotation represents. This lesson introduces the complex plane and plotting complex numbers as coordinates.

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Lenny
1/17
Lesson
Complex Polynomial Slides
Root Verification Lab Worksheet

Complex Roots and Polynomials

Applying complex arithmetic to verify roots of polynomial equations and practicing synthetic division with complex numbers.

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Lenny
1/17
Lesson
Unity Roots Slides
Unity Polygons Worksheet

Symmetry and Unity Roots

Exploring the symmetry of roots of unity and practicing arithmetic operations within the context of these cyclotomic values.

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Lenny
1/17
Lesson
Spin and Scale Slides
Spin and Scale Activity Worksheet

Spin and Scale Transformations

Investigating the geometric effect of multiplication by i and general complex numbers, focusing on rotation and scaling.

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Lenny
1/17
Lesson
Geometric Addition Slides
Vector Sum Challenge Worksheet

Vector Addition and Translation

Students use vector addition (parallelogram rule) to visualize the addition and subtraction of complex numbers, verifying results algebraically and geometrically.

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Lenny
1/17
Lesson
Argand Mapping Slides
Vector Mapping Worksheet
Mapping Plane Teacher Guide

Mapping the Argand Plane

Students map complex numbers onto the Argand plane, associating real and imaginary parts with x and y coordinates, and connecting them to vector representations.

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Lenny
1/17
Lesson
Vector Velocity Project Guide
Vector Velocity Rubric

Computer Graphics Animation Project

In this final project, students apply their knowledge to create a frame-by-frame transformation plan for a polygon, simulating the math used in modern computer graphics and animation.

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Lenny
1/17
Lesson
Order Matters Slides
Sequence Scandal Activity

Composition of Transformations

Students explore the geometric meaning of matrix multiplication as the composition of transformations. They discover why the order of transformations matters through hands-on inquiry and calculation.

Lenny Avatar
Lenny
1/17
Lesson
The Sweep Slides
Rotating Shapes Workshop

Rotation Matrices

Focusing on trigonometry, students derive and apply the general rotation matrix. They practice rotating complex shapes (polygons) around the origin using matrix multiplication.

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Lenny
1/17
Lesson
Real World Ambiguity Slides
Ambiguous Signal Worksheet
Real World Answer Key

Real World Ambiguity

Students apply their knowledge to real-world word problems where the ambiguous case creates multiple physical possibilities.

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Lenny
1/17
Lesson
Predicting Triangles Slides
SSA Decision Tree Handout
The Predictor Exit Ticket

Categorizing SSA Scenarios

Students create a systematic framework for classifying SSA scenarios based on the relationship between side lengths and the triangle's height.

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Lenny
1/17
Lesson
Two Triangle Slides
Two Triangle Protocol Handout
Double Trouble Worksheet

Two Triangle Solutions

Students learn to identify and calculate both possible triangle solutions in the ambiguous case by finding supplementary angles.

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Lenny
1/17
Lesson
No Solution Slides
No Solution Worksheet
No Solution Answer Key

No Solution Analysis

Students investigate scenarios where the given side is too short to form a triangle, linking geometric impossibility to algebraic errors.

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Lenny
1/17
Lesson
Swinging Gate Slides
Swinging Gate Worksheet
Swinging Gate Teacher Guide

Swinging Gate Visualization

Students use geometric construction to explore how many triangles can be formed given Side-Side-Angle (SSA) data, focusing on the visual concept of the 'swinging side.'

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Lenny
1/17
Lesson
Irrational Design Challenge Guide

Irrational Design Lab

Students synthesize their learning by creating a geometric design or architectural model utilizing irrational proportions with mathematical justification.

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Lenny
1/17
Lesson
Continuous Growth Worksheet

Continuous Growth Curves

Students investigate Euler's number (e) as the limit of compound interest, contrasting discrete growth with continuous irrational curves.

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Lenny
1/17
Lesson
Pi and Probability Lab

Pi and Probability

Students explore applications of Pi in probability (Buffon's Needle) and volume optimization, estimating Pi through experimental data.

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Lenny
1/17
Lesson
Golden Geometry Worksheet

Golden Geometry

Students analyze the Golden Ratio (Phi) and its relationship to the Fibonacci sequence, calculating approximations and examining its presence in architecture and nature.

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Lenny
1/17
Lesson
Square Root Spiral Worksheet
Square Root Spiral Slides

The Square Root Spiral

Students construct the Spiral of Theodorus to visualize square roots as physical lengths of hypotenuses, connecting the Pythagorean theorem to irrational magnitudes.

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Lenny
1/17
Lesson
Group Structure Slides
Symmetry Group Worksheet
Euclidean Master Answer Key

Group Structure and Non-Commutativity

Exploration of isometries as a group under composition, examining axioms, non-commutativity, and Cayley tables for finite subgroups.

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Lenny
1/17
Lesson
Triple Flip Slides
Proof Deconstruction Worksheet

Three Reflections Theorem

Students prove that any isometry of the plane can be decomposed into at most three reflections, solidifying the reflection's role as a generator.

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Lenny
1/17
Lesson
Glide Discovery Slides
Glide Mechanics Activity

Glide Reflections

Introduction to the glide reflection as the unique fourth isometry, exploring its properties and composition-based definition.

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Lenny
1/17
Lesson
Invariant Files Slides
Invariant Files Worksheet

Fixed Point Analysis

A formal classification of isometries based on their fixed point sets, leading to a logical framework for identifying rigid motions.

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Lenny
1/17
Lesson
Mirror Magic Slides
Reflection Reactor Worksheet

Reflections as Generators

Students investigate reflections as the fundamental atoms of rigid motion, discovering how pairs of reflections generate rotations and translations.

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Lenny
1/17
Lesson
Mandala Masterpiece Slides Presentation
Mandala Masterpiece Project Guide

Mandala Masterpiece

Synthesis project where students create a complex geometric mandala. They must provide a documented 'construction script' proving the geometric validity of every intersection.

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Lenny
1/17
Lesson
Girih Logic Slides Presentation
Girih Tile Assembly Pack

Girih Logic

An exploration of Girih tiles and their connection to modern aperiodic tilings and Penrose geometry. Students construct and assemble modular tile sets.

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Lenny
1/17
Lesson
Star Grids Slides Presentation
Star Grids Worksheet

Star Grids

A deep dive into 6-fold and 8-fold symmetry. Students use the 'grid' method to generate complex Islamic star patterns and understand the logic of tessellation.

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Lenny
1/17
Lesson
The Euler Mystery Slides
Euler Line Lab Report
Euler Line Teacher Guide

The Euler Line Challenge

Students construct the Orthocenter, Circumcenter, and Centroid on a single scalene triangle to discover that they always lie on a straight line (the Euler Line).

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Lenny
1/17
Lesson
Gothic Vaults Slides Presentation
Tracer's Compass Worksheet
Medieval Mason Teacher Guide

Gothic Vaults

Exploring the structural and aesthetic geometry of Gothic architecture. Students construct pointed arches, trefoils, and quatrefoils, solving tangent circle packing problems used by medieval masons.

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Lenny
1/17
Lesson
Titanic Trig Study Guide
Titanic Trig Flashcards Part 1
Titanic Trig Flashcards Part 2
Titanic Navigational Chart

Titanic Trigonometry

A maritime-themed lesson exploring trigonometry through the lens of the Titanic's maiden voyage. Students master unit circle coordinates and trigonometric values using historical figures and navigation scenarios.

J

jlaroux

Math Teacher
2/24
Lesson
Target TSIA2 Math Worksheet
Target TSIA2 Math Key

TSIA2 Target Practice

A comprehensive 20-question practice test and answer key designed to prepare students for the TSIA2 Mathematics assessment, focusing on algebraic, geometric, and statistical reasoning.

JW

Jessica Waters

Math Teacher
1/21
Lesson
Mirror Math Worksheet
Mirror Math Slides
Mirror Math Teacher Guide

Mirror Math

A hands-on exploration of inverse functions where students use folding and tracing to discover the visual relationship between a function and its inverse. The lesson emphasizes the reflection over the line y=x and the swapping of coordinate values.

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Lenny
1/19
Lesson
Complex Blueprints Teacher Guide
Complex Blueprints Presentation Slides
Complex Blueprints Student Worksheet
Complex Blueprints Graph Paper Activity

Complex Blueprints

A Pre-Calculus lesson introducing the complex plane (Argand diagram) and the calculation of the modulus (absolute value) of complex numbers using the Pythagorean theorem.

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Lenny
1/19
Lesson
Shadow Solutions Teacher Guide
Shadow Solutions Slides
Shadow Solutions Worksheet
Shadow Solutions Journal Prompts

Shadow Solutions

A deep dive into extraneous solutions using a 'shadow equation' framework. Students visualize how squaring a radical equation effectively solves two distinct systems simultaneously, creating 'ghost' intersections.

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Lenny
1/19
Lesson
Orbital Outlines Presentation
Orbital Outlines Worksheet
Orbital Outlines Graph Paper
Orbital Outlines Teacher Guide

Orbital Outlines

An 11th grade Pre-Calculus lesson on ellipses, covering horizontal and vertical orientations, eccentricity calculations, and coordinate geometry through the lens of orbital mechanics and architecture.

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Lenny
1/19
Lesson
Dimension Shift Worksheet
Dimension Shift Slides
Dimension Shift Discussion Cards
Dimension Shift Answer Key

Dimension Shift

A high-school level exploration of coordinate geometry that extends 2D distance concepts into 3D space and introduces the point-to-line distance formula for optimization problems. Students will visualize spatial diagonals and solve real-world distance challenges.

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Lenny
1/19
Lesson
Complex Seas Slides
Complex Battleship Instructions
Complex Battleship Grid
Complex Seas Teacher Guide

Complex Seas Graphing Numbers

A lesson on graphing complex numbers on the Argand diagram, featuring a 'Complex Battleship' game to reinforce coordinate-to-complex mapping skills.

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Lenny
1/19
Lesson
Unit Circle Blueprint Anchor Chart
Unit Circle Lab Worksheet
Living Unit Circle Slides
Unit Circle Answer Key Teacher Resource

Living Unit Circle Construction

Students will collaboratively construct a large-scale unit circle identifying coordinate points for all six trigonometric functions through video analysis and poster construction.

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Lenny
1/19
Lesson
Chaos Coordinates Worksheet
Fractal Frontiers Presentation
Fractal Facilitation Guide
Chaos Coordinates Answer Key
Complex Plane Grid Paper
Complex Arithmetic Reference

Fractal Frontiers

An enrichment lesson for High School Math Club introducing the Mandelbrot set through manual iteration on the complex plane. Students learn to classify and plot complex numbers before exploring how simple iterative rules create infinite complexity.

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Lenny
1/19
Lesson
Unit Circle Teacher Guide
Coordinate Compass Presentation Slides
Triangle Tool Kit Printable
Unit Circle Blueprint Activity
Triangle Tempo Flashcards

The Coordinate Compass

Students bridge the gap between geometry and trigonometry by placing special right triangles within a unit circle. Through physical manipulation of scaled triangles, they derive the coordinates of the first quadrant and connect triangle side lengths to sine and cosine values.

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Lenny
1/19
Lesson
Imaginary Identity Slides
Complex Talk Cards
Standard Form Recording Sheet
Sorting Identity Cards
Standard Form Answer Key

Imaginary Identity

This lesson focuses on converting complex number expressions into standard form (a + bi) and graphing them on the complex plane. Students will use a video to observe mathematical habits of mind and practice simplifying expressions involving powers of i and the distributive property.

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Lenny
1/19
Lesson
Loop Logic Presentation Slides
Polar Blueprint Paper
Loop Design Rubric
Logic Checkpoints Worksheet
Loop Logic Teacher Guide

Loop Logic

Students design a vertical roller coaster loop using polar coordinates and complex roots, exploring real-world applications of circular motion as seen in engineering and radar systems.

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Lenny
1/19
Lesson
Human Unit Circle Field Guide
Human Unit Circle Slides
Human Unit Circle Teacher Notes

The Human Unit Circle

A kinesthetic pre-calculus lesson where students physically construct a large-scale unit circle to verify trigonometric coordinates through measurement and movement.

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Lenny
1/19
Lesson
Determinant Designs Facilitation Guide
Determinant Designs Slides
Shoelace Strategy Anchor Chart
Coordinate Combat Worksheet
Coordinate Combat Answer Key

Determinant Designs

Students will bridge the gap between coordinate geometry and linear algebra by connecting the Shoelace Algorithm to matrix determinants. This lesson uses a step-by-step video demonstration followed by algebraic verification of the 3x3 matrix area formula.

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Lenny
1/19
Lesson
Radar Command Teacher Guide
Radar Command Slides
Radar Command Worksheet
Radar Command Mission Cards

Radar Command

A Precalculus lesson exploring coordinate systems through the lens of maritime and aerial navigation, featuring a hands-on radar tracking simulation.

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Lenny
1/19
Lesson
System Crash Worksheet
System Crash Rubric
System Crash Presentation Slides

System Crash Diagnostics

This lesson focuses on identifying and correcting common algebraic errors in solving systems of nonlinear equations, specifically addressing extraneous solutions and missing roots. Students engage with a video tutorial, guided notes, and a 'Find the Error' diagnostic activity to strengthen their verification strategies.

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Lenny
1/19
Lesson
Nonlinear Intersection Teacher Guide
Nonlinear Intersection Student Worksheet
Nonlinear Intersection Graphing Paper
Nonlinear Intersection Exit Ticket

Nonlinear Intersection Points

A comprehensive Pre-Calculus lesson on solving systems of nonlinear equations (linear and quadratic) using substitution, featuring a blueprint-themed set of materials including a guided worksheet, specialized graphing paper, and an exit ticket.

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Lenny
1/19
Lesson
Collision Course Slides
Collision Course Worksheet

Symmetry and Intersection of Polar Graphs

The sequence concludes with advanced graphing analysis involving symmetry tests and finding intersection points. Students learn why algebraic solutions sometimes miss intersection points at the pole.

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Lenny
1/18
Lesson
Complex Curves Slides Space Snail and Roses
Curve Collector Worksheet

Analyzing Roses and Lima\u00e7ons

Students systematically explore classical polar curves. They analyze the effect of coefficients on the number of petals in rose curves and the presence of inner loops in lima\u00e7ons.

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Lenny
1/18
Lesson
Hyperbola Anatomy Anchor Chart
Hyperbola Hunt Worksheet
Hyperbola Hunt Slides

Hyperbola Hunt

A comprehensive lesson on hyperbola properties, focusing on calculating foci, determining asymptote equations via the fundamental rectangle, and converting between general and standard forms. Includes a video-guided tutorial and a 'Hyperbola Hunters' graphing activity.

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Lenny
1/19
Lesson
Conic Clash Teacher Guide
Conic Clash Slides
Conic Clash Formula Sheet

Conic Clash Review

A high-energy review lesson for 12th grade or undergraduate students to master the identification and properties of all four conic sections through rapid-fire drills, video synthesis, and collaborative poster creation.

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Lenny
1/19
Lesson
Orbital Outlines Presentation
Orbital Outlines Worksheet
Orbital Outlines Graph Paper
Orbital Outlines Teacher Guide

Orbital Outlines

An 11th grade Pre-Calculus lesson on ellipses, covering horizontal and vertical orientations, eccentricity calculations, and coordinate geometry through the lens of orbital mechanics and architecture.

Lenny Avatar
Lenny
1/19
Lesson
Foci Investigation Worksheet
Foci Finder Slides
Ellipse Exit Ticket
Foci Facilitator Guide

Focus on the Foci

A rigorous exploration of ellipse foci, focusing on the geometric derivation of the distance 'c' and the relationship between focal points and eccentricity. Students move from a physical string-and-tacks demonstration to mathematical calculation and graphing.

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Lenny
1/19
Lesson
Curve Clash Slides
Conic Comparison Worksheet
Property Sorting Cards
Conic Contrast Teacher Guide

Curve Clash

A comprehensive Pre-Calculus lesson comparing the geometric properties of ellipses and hyperbolas, featuring a video-guided analysis and a hands-on sorting activity.

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Lenny
1/19
Lesson
Conic Coordinates Worksheet
Hyperbola Blueprint Slides
Graphing Relay Guide
Rectangle Reflection Sheet

Hyperbola Blueprint

Students master the technique of graphing hyperbolas centered at the origin by constructing reference rectangles and asymptotes. This lesson utilizes a video demonstration and a collaborative 'Graphing Relay' to reinforce the relationship between the equation's constants and the visual graph.

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Lenny
1/19
Lesson
Hyperbola Blueprints Teacher Guide
Hyperbola Blueprints Slides
Hyperbola Manual Project Template
Hyperbola Manual Rubric

Hyperbola Blueprints

A lesson focusing on identifying, graphing, and analyzing hyperbolas with shifted centers (h,k). Students will view instructional video content and create a 'User Manual' to demonstrate their mastery of the step-by-step graphing process.

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Lenny
1/19
Lesson
System Crash Worksheet
System Crash Rubric
System Crash Presentation Slides

System Crash Diagnostics

This lesson focuses on identifying and correcting common algebraic errors in solving systems of nonlinear equations, specifically addressing extraneous solutions and missing roots. Students engage with a video tutorial, guided notes, and a 'Find the Error' diagnostic activity to strengthen their verification strategies.

Lenny Avatar
Lenny
1/19
Lesson
Nonlinear Intersection Teacher Guide
Nonlinear Intersection Student Worksheet
Nonlinear Intersection Graphing Paper
Nonlinear Intersection Exit Ticket

Nonlinear Intersection Points

A comprehensive Pre-Calculus lesson on solving systems of nonlinear equations (linear and quadratic) using substitution, featuring a blueprint-themed set of materials including a guided worksheet, specialized graphing paper, and an exit ticket.

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Lenny
1/19
Lesson
Trajectory Designer Slides
Trajectory Designer Lab Report

Trajectory Designer

A culminating workshop where students design parametric equations to navigate a 'robot' through a constrained obstacle course.

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Lenny
1/18
Lesson
Flight Dynamics Slides
Flight Dynamics Worksheet

Flight Dynamics

Students apply parametric equations to real-world physics problems involving projectiles, calculating time of flight, range, and maximum height.

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Lenny
1/18
Lesson
Decoding the Curve Slides
Decoding the Curve Worksheet
Decoding the Curve Answer Key

Decoding the Curve

Focuses on the algebraic techniques required to convert parametric equations into Cartesian rectangular forms using substitution and trigonometric identities.

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Lenny
1/18
Lesson
Path and Pace Slides
Path and Pace Worksheet
Path and Pace Teacher Guide

Path and Pace

Students use graphing software to visualize how a third variable, t, controls the x and y coordinates simultaneously. The class explores the difference between the path and the motion along the path.

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Lenny
1/18
Lesson
Conic Matchmaker Slides
Conic Matchmaker Assessment Worksheet
Conic Matchmaker Answer Key

Parameter Lab Assessment

A culminating activity where students apply their knowledge of eccentricity, polar coordinates, and rotation to solve a series of dynamic matching challenges.

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Lenny
1/17
Lesson
Matrix Magic Slides
Eigenvalue Shortcut Sheet
Linear Algebra Bridge Guide

Matrix Representation

Introduce matrix representations and eigenvalues as a pathway to diagonalizing quadratic forms.

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Lenny
1/17
Lesson
Graphing Workshop Slides
Master Sketcher Project
Coordinate Shift Key

Graphing Rotated Conics

Perform a complete transformation and graphing procedure for a rotated conic section.

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Lenny
1/17
Lesson
Discriminant Power Slides
Quick Classify Quiz
Invariant Proof Notes

The Invariant Discriminant

Explore the discriminant and its invariance under rotation to quickly classify conic sections.

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Lenny
1/17
Lesson
Rotation Formula Slides
Angle Hunter Activity
Formula Derivation Guide

Rotation of Axes

Derive and apply rotation of axes formulas to eliminate the cross-product term in quadratic equations.

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Lenny
1/17
Lesson
General Form Slides
Coefficient Detective Worksheet
Anatomy of a Quadratic Guide

The General Quadratic Equation

Analyze the general second-degree equation and understand the geometric implications of the cross-product term.

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Lenny
1/17
Lesson
Dimension Shift Worksheet
Dimension Shift Slides
Dimension Shift Discussion Cards
Dimension Shift Answer Key

Dimension Shift

A high-school level exploration of coordinate geometry that extends 2D distance concepts into 3D space and introduces the point-to-line distance formula for optimization problems. Students will visualize spatial diagonals and solve real-world distance challenges.

Lenny Avatar
Lenny
1/19
Lesson
Matrix Magic Slides
Eigenvalue Shortcut Sheet
Linear Algebra Bridge Guide

Matrix Representation

Introduce matrix representations and eigenvalues as a pathway to diagonalizing quadratic forms.

Lenny Avatar
Lenny
1/17
Lesson
Graphing Workshop Slides
Master Sketcher Project
Coordinate Shift Key

Graphing Rotated Conics

Perform a complete transformation and graphing procedure for a rotated conic section.

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Lenny
1/17
Lesson
Discriminant Power Slides
Quick Classify Quiz
Invariant Proof Notes

The Invariant Discriminant

Explore the discriminant and its invariance under rotation to quickly classify conic sections.

Lenny Avatar
Lenny
1/17
Lesson
Rotation Formula Slides
Angle Hunter Activity
Formula Derivation Guide

Rotation of Axes

Derive and apply rotation of axes formulas to eliminate the cross-product term in quadratic equations.

Lenny Avatar
Lenny
1/17
Lesson
General Form Slides
Coefficient Detective Worksheet
Anatomy of a Quadratic Guide

The General Quadratic Equation

Analyze the general second-degree equation and understand the geometric implications of the cross-product term.

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Lenny
1/17
Lesson
Conic Synthesis Slides
Conic DNA Cards Activity
Conic DNA Assessment

Conic Section DNA Matchup

A synthesis lesson where students classify conic sections based on their geometric "DNA" (definitions) and match them to their corresponding coordinate equations.

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Lenny
1/17
Lesson
Hyperbola Difference Slides
Hyperbola Derivation Challenge

The Hyperbolic Difference

Students contrast the sum-based ellipse definition with the difference-based hyperbola definition, working through the algebraic derivation of the hyperbola's standard form.

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Lenny
1/17
Lesson
Ellipse Constructor Slides
Gardener's Oval Lab Sheet

The Gardener's Ellipse

Using a two-foci definition, students construct ellipses and derive the standard equation, establishing the relationship between the semi-axes and focal distance.

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Lenny
1/17
Lesson
Parabola Formula Slides
Parabola Derivation Worksheet

The Parabola Formula Proof

Students algebraically derive the standard form of a parabola using the focus-directrix definition and investigate how parameter 'a' relates to the geometric focus.

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Lenny
1/17
Lesson
Loci Introduction Slides
Geometric DNA Discovery Worksheet
Loci Discovery Answer Key

Circular Beginnings and Parabolic Folds

Students define circles and parabolas based on distance constraints from fixed points and lines, performing physical activities to visualize the shapes before deriving the standard circle equation.

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Lenny
1/17
Lesson
Logo Design Project Guide
Design Blueprint Planner

Blueprint Challenge

A culminating project where students create a logo using at least one of each type of conic section, providing both general and standard equations.

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Lenny
1/17
Lesson
Vertex Slice Slides
Degenerate Cases Discussion Guide
Real or Fake Exit Ticket

Hidden Identities

Students investigate degenerate conics like points and intersecting lines, occurring when the plane slices through the vertex of the cone.

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Lenny
1/17
Lesson
Algebraic Surgery Slides
Algebraic Surgery Worksheet
Algebraic Surgery Answer Key

Algebraic Surgery

Students consolidate completing the square skills for both x and y variables to convert general equations into clean standard forms.

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Lenny
1/17
Lesson
Classification Flowchart Slides
Conic Detective Worksheet
Conic Detective Answer Key

Conic Detective

Students develop a flowchart to classify equations based on the relationship between coefficients A and C and practice rapid identification.

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Lenny
1/17
Lesson
Conic Morph Slides
Coefficient Morph Worksheet
Coefficient Morph Teacher Guide

Master Equation

Students explore the general equation $Ax^2 + Cy^2 + Dx + Ey + F = 0$ and how changing coefficients $A$ and $C$ morphs the shape between the four conic types.

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Lenny
1/17
Lesson
Coordinate Blueprint Slides
Surveyor Proof Project

Coordinate Geometry Proofs

Students apply slope, distance, and midpoint formulas to prove quadrilateral properties on the coordinate plane.

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Lenny
1/17
Lesson
Non Parallelogram Slides
Kite and Trap Lab

Trapezoids and Kites

Analysis of non-parallelogram quadrilaterals, including trapezoids and kites, with a focus on base angles and diagonal properties.

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Lenny
1/17
Lesson
Special Parallelogram Slides
Quadrilateral Tree Organizer

Rectangles Rhombi and Squares

An exploration of the special properties of rectangles, rhombi, and squares, and how they fit into a hierarchical classification system.

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Lenny
1/17
Lesson
Parallelogram Criteria Slides
Sufficient Conditions Lab

Tests for Parallelograms

Students investigate sufficient conditions for a quadrilateral to be a parallelogram, focusing on converse logic and minimum requirements.

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Lenny
1/17
Lesson
Duality Saddle Points Slides
Duality Decoded Case Study Worksheet

Duality and Saddle Points

The sequence concludes with an introduction to Min-Max theorems and saddle point analysis, exploring duality gaps and the conditions under which primal and dual problems align.

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Lenny
1/18
Lesson
Multivariate Second-Order Slides
Hessian Analysis Lab Worksheet

Multivariate Second-Order Conditions

Focusing on the Hessian matrix, students derive and apply tests for positive definiteness to classify critical points in higher dimensions, bridging linear algebra and calculus.

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Lenny
1/18
Lesson
Convex Functions Properties Slides
Convex Functions Problem Set Worksheet

Properties of Convex Functions

Students analyze the definitions of convex and concave functions, proving that local minima in convex functions are global minima and applying Jensen's Inequality.

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Lenny
1/18
Lesson
Convex Geometry Slides
Convex Geometry Workshop Worksheet

Convex Sets and Geometry

This lesson explores the geometry of the domain, defining convex sets, hulls, and separating hyperplanes, and distinguishing between convex and non-convex constraints.

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Lenny
1/18
Lesson
Topology Foundations Slides
Topology and Existence Worksheet

Topology and the Weierstrass Theorem

Students review point-set topology concepts including compactness and continuity to prove the Extreme Value Theorem in n-dimensions, focusing on identifying when a function is guaranteed to attain a maximum or minimum.

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Lenny
1/18
Lesson
Butterfly Synthesis Slides
Butterfly Proof Portfolio

The Butterfly Synthesis

A capstone lesson where students synthesize all previous theorems to prove the Butterfly Theorem.

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Lenny
1/18
Lesson
Secant Logic Slides
Outside Angle Proofs Worksheet

Secant Intersection Logic

Generalizes angle theorems to intersections occurring outside the circle boundary using the Exterior Angle Theorem.

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Lenny
1/18
Lesson
Cyclic Connections Slides
Ptolemy Proof Guide

Cyclic Quadrilateral Proofs

Investigates the properties of cyclic quadrilaterals and provides a formal derivation of Ptolemy's Theorem.

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Lenny
1/18
Lesson
Tangent Logic Slides
Tangent Proof Workshop

Tangent Orthogonality Rules

Explores the geometric properties of tangents, treating them as limiting cases of secants and proving orthogonality to the radius.

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Lenny
1/18
Lesson
Angle Axiom Slides
Angle Case Worksheet

Angle Axiom Proofs

Focuses on the formal proof of the Inscribed Angle Theorem using a case-based approach (center on, inside, and outside the angle).

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Lenny
1/18
Lesson
Plant Pressure Slides
Reactor Breach Case Study
Flow Expert Assessment

Plant Pressure

A culminating engineering challenge where students manage net flow rates (inflow vs. outflow) to maintain system stability in various tank geometries.

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Lenny
1/17
Lesson
Conic Flow Slides
Hourglass Hustle Workshop
Conic Master Answer Key

Conic Flow

Building on the geometric substitution from the previous lesson, students fully differentiate and solve conical related rates problems, analyzing the 'acceleration' of fluid levels.

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Lenny
1/17
Lesson
Ratio Rigger Slides
Variable Reducer Worksheet
Geometry Gaps Reference

Ratio Rigger

This lesson addresses the geometric complexity of conical tanks, focusing specifically on using similar triangles to reduce multi-variable volume formulas into single-variable equations.

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Lenny
1/17
Lesson
Steady Stream Slides
Pool Filling Worksheet
Constant Flow Answer Key

Steady Streams

Focusing on containers with constant cross-sections, students learn why cylinders and prisms exhibit linear height changes relative to volume. This provides a baseline for comparing more complex geometries.

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Lenny
1/17
Lesson
Sphere Mechanics Slides
Balloon Bursting Worksheet
Sphere Logic Teacher Guide

Sphere Mechanics

Students explore the calculus of expanding spheres, analyzing how constant volume change affects radius and surface area differently. The lesson highlights the inverse square relationship in spherical growth.

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Lenny
1/17
Lesson
Conic Innovation Slides
Conic Innovation Proposal Worksheet
Innovation Rubric Guide

Conic Design Challenge

A summative design challenge where students propose a technical application of a conic section, backed by formal geometric modeling and algebraic proofs.

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Lenny
1/17
Lesson
Cosmic Conics Slides
Hubble Mirror Analysis Worksheet
Compound Conic Answer Key

Telescope Optics

Analysis of compound conic systems in Cassegrain telescopes, focusing on the interplay between parabolic primary and hyperbolic secondary mirrors.

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Lenny
1/17
Lesson
Hyperbolic Navigation Slides
Lost at Sea Simulation Worksheet
Navigating Hyperbolas Teacher Guide

Hyperbolic Navigation

Exploring hyperbolic geometry through the lens of LORAN navigation, where students solve systems of equations to triangulate position based on time-difference of arrival.

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Lenny
1/17
Lesson
Elliptical Echoes Slides
Whispering Gallery Math Worksheet
Lithotripsy Case Study Guide

Elliptical Acoustics

Investigation of the reflective property of ellipses, focusing on acoustic whispering galleries and medical lithotripsy applications.

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Lenny
1/17
Lesson
Parabolic Reflectors Slides
Solar Cooker Blueprint Worksheet
Focus on Light Teacher Guide

Parabolic Reflectors

Students derive and apply the reflection property of parabolas to model solar cookers and satellite dishes, translating between physical dimensions and standard form equations.

Lenny Avatar
Lenny
1/17
Lesson
Radian Discovery Slides
String Circle Guide
Arc Length Lab Worksheet
Radian Conversion Check
Radian Mastery Key

Circle Wrap Discovery

A targeted small-group lesson where students use string and unit circle models to discover that radian measure is equivalent to arc length when the radius is one.

Lenny Avatar
Lenny
2/12
Lesson
Spandrel Secrets Teacher Guide
Hidden Curves Slides
Negative Space Challenge Sheet
Negative Space Answer Key

Hidden Curves

Students explore the geometry of negative space through 'spandrels'—the shapes left over when curves are placed within polygons. This lesson uses algebraic decomposition and visual transformations to solve complex area problems, culminating in the creation of generalized formula sheets.

Lenny Avatar
Lenny
1/19
Lesson
Surface Solids Slides
Radial Revolution Lab
Radial Revolution Teacher Key

Surface Area Revolution

The sequence concludes with finding the surface area of solids formed by revolving polar curves around the polar axis or the line theta = pi/2.

Lenny Avatar
Lenny
1/18
Lesson
Polar Arc Length Slides
Spiral Shell Worksheet
Spiral Shell Teacher Key

Polar Arc Length

Students derive and apply the arc length formula for polar curves, calculating the distance along spirals and cardioids.

Lenny Avatar
Lenny
1/18
Lesson
Bounded Regions Slides
Shared Territory Worksheet
Bounded Regions Teacher Key

Bounded Polar Regions

Students find the area of regions shared by or bounded between two polar curves by identifying intersection points and setting up compound integrals.

Lenny Avatar
Lenny
1/18
Lesson
Inner Loop Slides
Lima\u00e7on Loop Lab
Inner Loop Teacher Key

Inner Loop Calculations

Focusing on lima\u00e7ons and rose curves, students learn to find integration limits by solving for r=0 and calculate the area of specific loops.

Lenny Avatar
Lenny
1/18
Lesson
Polar Area Slides
Sector Secrets Worksheet
Polar Area Teacher Key

Polar Area Formula

Students derive the polar area formula using circular sectors and apply it to find the area of simple polar regions. The lesson focuses on the transition from Riemann rectangles to radial wedges.

Lenny Avatar
Lenny
1/18
Lesson
Polar Escape Activity
Polar Escape Answer Key

Polar Calculus Capstone

A comprehensive workshop and escape-room style activity applying all polar calculus concepts to complex geometric problems.

Lenny Avatar
Lenny
1/18
Lesson
Polar Arc Length Slides
Arc Length Mastery Worksheet

Arc Length in Polar Coordinates

Derivation and application of the polar arc length formula to calculate the distance along curved polar paths.

Lenny Avatar
Lenny
1/18
Lesson
Compound Polar Area Slides
Compound Area Investigation Worksheet

Area Between Polar Curves

Calculating the area bounded by multiple polar curves by finding intersection points and setting up compound integrals.

Lenny Avatar
Lenny
1/18
Lesson
Area of Polar Regions Slides
Area Calculations Worksheet

Area of Polar Regions

Introduction to the polar area integral formula based on sector summation, applying it to find the area of simple closed polar loops.

Lenny Avatar
Lenny
1/18
Lesson
Slopes of Polar Curves Slides
Slope Investigation Worksheet

Slopes of Polar Curves

Students derive and apply the formula for dy/dx in polar coordinates, identifying horizontal and vertical tangent lines on complex polar graphs.

Lenny Avatar
Lenny
1/18
Lesson
Unit Circle Mastery Worksheet
Unit Circle Teacher Guide

Circle Mastery Finale

Mastering the evaluation of exact trigonometric values for all standard angles on the unit circle.

Lenny Avatar
Lenny
1/18
Lesson
Symmetry and Reflection Worksheet

Symmetry and Reflection

Using symmetry and reference angles to extend trigonometric values across all four quadrants.

Lenny Avatar
Lenny
1/18
Lesson
First Quadrant Mapping Worksheet

First Quadrant Blueprint

Mapping scaled triangles onto the coordinate plane to define sine and cosine as x and y coordinates in the first quadrant.

Lenny Avatar
Lenny
1/18
Lesson
Radian Measure Reference

Radian Revolution

Students discover the radian as a measure of arc length relative to radius and practice converting between degrees and radians.

Lenny Avatar
Lenny
1/18
Lesson
Triangle Scaling Worksheet
Triangle Scaling Slides

Triangle Scaling Lab

Students scale special right triangles (30-60-90 and 45-45-90) so that their hypotenuse equals one, establishing the fundamental coordinates for the unit circle.

Lenny Avatar
Lenny
1/18
Lesson
Precision Matters Slides
NASA Mars Landing Lab Worksheet
Transcendental Horizons Quiz

The Precision Pursuit

Students compare various approximation methods to analyze percent error. They discuss the importance of precision in engineering and science, particularly in aerospace applications.

Lenny Avatar
Lenny
1/17
Lesson
Infinite Sum Slides
Series Convergence Worksheet
Convergence Solutions

Infinite Summation Workshop

Students look at how modern calculators compute irrational numbers using infinite series. They sum the first few terms to see the convergence toward the irrational value.

Lenny Avatar
Lenny
1/17
Lesson
Growth Limit Slides
Banking on e Worksheet
Banking on e Solutions

The Limit of Growth

Students investigate 'e' through the lens of compound interest. By increasing compounding frequency, they discover the limit that defines this ubiquitous irrational number.

Lenny Avatar
Lenny
1/17
Lesson
Target TSIA2 Math Worksheet
Target TSIA2 Math Key

TSIA2 Target Practice

A comprehensive 20-question practice test and answer key designed to prepare students for the TSIA2 Mathematics assessment, focusing on algebraic, geometric, and statistical reasoning.

JW

Jessica Waters

Math Teacher
1/21
Lesson
Architect Guide Teacher Resource
Radius Blueprint Slides
Coordinate Builder Worksheet
Drafting Reflections Journal Prompts

Unit Circle Architect

Students will bridge the gap between special right triangle ratios and the Unit Circle by calculating coordinates for 30° and 60° angles using a hypotenuse of 1.

Lenny Avatar
Lenny
1/19
Lesson
Circle Labyrinth Challenge
Circle Labyrinth Slides
Circle Labyrinth Answer Key

Circle Labyrinth

A mastery-based finale where students navigate a complex 'Circle Labyrinth' by synthesizing all learned segment theorems.

Lenny Avatar
Lenny
1/18
Lesson
Pulley Power Slides
Pulley Power Worksheet
Pulley Power Answer Key

Pulley Power

Students apply circle theorems to find lengths of internal and external common tangents, utilizing auxiliary lines and the Pythagorean theorem.

Lenny Avatar
Lenny
1/18
Lesson
Tangent Transitions Slides
Secant-Tangent Modeling Task
Tangent Transitions Answer Key

Tangent Transitions

Students analyze the relationship between a tangent and a secant, solving problems that model real-world geometric constraints.

Lenny Avatar
Lenny
1/18
Lesson
Secant Stretches Slides
Secant Strategy Worksheet
Secant Strategy Answer Key

Secant Stretches

Students extend the Power of a Point concept to secants intersecting outside a circle, deriving the whole-times-external relationship.

Lenny Avatar
Lenny
1/18
Lesson
Chord Crossings Slides
Chord Discovery Worksheet
Chord Discovery Answer Key

Chord Crossings

Students discover the Intersecting Chords Theorem through similarity and apply it to solve geometric problems involving linear and quadratic equations.

Lenny Avatar
Lenny
1/18
Lesson
Space Inversion Slides
Geometric Mirror Teacher Guide
The Inversion Lab Worksheet
Circle Power Answer Key

Orthogonal Circles and Inversion

Applies Power of a Point to understand orthogonal circles and the transformational geometry of inversion.

Lenny Avatar
Lenny
1/18
Lesson
Three Circle Nexus Slides
Nexus Navigation Teacher Guide
Radical Center Challenge Worksheet

Radical Center and Coaxial Circles

Explores the concurrency of radical axes at the radical center and examines systems of coaxial circles.

Lenny Avatar
Lenny
1/18
Lesson
Neutral Ground Slides
Locus Logic Teacher Guide
Radical Axis Map Worksheet

The Radical Axis

Defines the radical axis as a locus of equal power and investigates its properties relative to two circles.

Lenny Avatar
Lenny
1/18
Lesson
Unified Circle Metrics Slides
Metric Bridges Teacher Guide
The Similarity Link Worksheet

Unifying Segments

Proves the unity of chord, secant, and tangent theorems using similar triangles and generalizes the formula for all line-circle intersections.

Lenny Avatar
Lenny
1/18
Lesson
Invariant Power Slides
Point Power Teacher Guide
Invariant Product Activity

Defining Power of a Point

Introduces the scalar 'Power of a Point' relative to a circle and explores the invariance of segment products through chords and secants.

Lenny Avatar
Lenny
1/18
Lesson
Butterfly Synthesis Slides
Butterfly Proof Portfolio

The Butterfly Synthesis

A capstone lesson where students synthesize all previous theorems to prove the Butterfly Theorem.

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Lenny
1/18
Lesson
Secant Logic Slides
Outside Angle Proofs Worksheet

Secant Intersection Logic

Generalizes angle theorems to intersections occurring outside the circle boundary using the Exterior Angle Theorem.

Lenny Avatar
Lenny
1/18
Lesson
Cyclic Connections Slides
Ptolemy Proof Guide

Cyclic Quadrilateral Proofs

Investigates the properties of cyclic quadrilaterals and provides a formal derivation of Ptolemy's Theorem.

Lenny Avatar
Lenny
1/18
Lesson
Tangent Logic Slides
Tangent Proof Workshop

Tangent Orthogonality Rules

Explores the geometric properties of tangents, treating them as limiting cases of secants and proving orthogonality to the radius.

Lenny Avatar
Lenny
1/18
Lesson
Angle Axiom Slides
Angle Case Worksheet

Angle Axiom Proofs

Focuses on the formal proof of the Inscribed Angle Theorem using a case-based approach (center on, inside, and outside the angle).

Lenny Avatar
Lenny
1/18
Lesson
Precision Matters Slides
NASA Mars Landing Lab Worksheet
Transcendental Horizons Quiz

The Precision Pursuit

Students compare various approximation methods to analyze percent error. They discuss the importance of precision in engineering and science, particularly in aerospace applications.

Lenny Avatar
Lenny
1/17
Lesson
Infinite Sum Slides
Series Convergence Worksheet
Convergence Solutions

Infinite Summation Workshop

Students look at how modern calculators compute irrational numbers using infinite series. They sum the first few terms to see the convergence toward the irrational value.

Lenny Avatar
Lenny
1/17
Lesson
Growth Limit Slides
Banking on e Worksheet
Banking on e Solutions

The Limit of Growth

Students investigate 'e' through the lens of compound interest. By increasing compounding frequency, they discover the limit that defines this ubiquitous irrational number.

Lenny Avatar
Lenny
1/17
Lesson
Plumbing Formula Cheat Sheet
Pipe Power Math Test
Pipe Power Math Answer Key

Pipe Power Math

A comprehensive assessment and reference set for Tier 1 plumbing apprentices covering essential trade mathematics, including offsets, volumes, and conversions.

M

mbloomer

Other
3/2
Lesson
Spandrel Secrets Teacher Guide
Hidden Curves Slides
Negative Space Challenge Sheet
Negative Space Answer Key

Hidden Curves

Students explore the geometry of negative space through 'spandrels'—the shapes left over when curves are placed within polygons. This lesson uses algebraic decomposition and visual transformations to solve complex area problems, culminating in the creation of generalized formula sheets.

Lenny Avatar
Lenny
1/19
Lesson
Programmer Console Worksheet
Robot Vector Commands Slides
Grid Master Teacher Guide

Robot Vector Commands

A high-school geometry or pre-calculus lesson focusing on converting vectors from magnitude and direction to component form through a hands-on 'robot programming' simulation. Students use trigonometry to translate movement commands into x and y displacements.

Lenny Avatar
Lenny
1/19
Lesson
Dimension Shift Worksheet
Dimension Shift Slides
Dimension Shift Discussion Cards
Dimension Shift Answer Key

Dimension Shift

A high-school level exploration of coordinate geometry that extends 2D distance concepts into 3D space and introduces the point-to-line distance formula for optimization problems. Students will visualize spatial diagonals and solve real-world distance challenges.

Lenny Avatar
Lenny
1/19
Lesson
Loop Logic Presentation Slides
Polar Blueprint Paper
Loop Design Rubric
Logic Checkpoints Worksheet
Loop Logic Teacher Guide

Loop Logic

Students design a vertical roller coaster loop using polar coordinates and complex roots, exploring real-world applications of circular motion as seen in engineering and radar systems.

Lenny Avatar
Lenny
1/19
Lesson
Matrix Decoder Worksheet
Determinant Pulse Check Exit Ticket
Matrix Mastermind Slides

Matrix Mastermind Introduction to Determinants

This lesson introduces students to the determinant of 2x2 matrices. Students will learn the calculation formula, practice with various examples, explore matrices with a determinant of zero, and understand the geometric interpretation of a determinant as the area of a parallelogram.

Lenny Avatar
Lenny
1/19
Lesson
Human Unit Circle Field Guide
Human Unit Circle Slides
Human Unit Circle Teacher Notes

The Human Unit Circle

A kinesthetic pre-calculus lesson where students physically construct a large-scale unit circle to verify trigonometric coordinates through measurement and movement.

Lenny Avatar
Lenny
1/19
Lesson
Spatial Solutions Slides
Tiny House Blueprint Project Workbook
Design Justification Rubric

Applying Geometry to Design

In this culminating project, students solve a spatial design problem (the Tiny House Challenge), using geometric modeling to justify their layout and material choices.

Lenny Avatar
Lenny
1/18
Lesson
Efficiency Engine Slides
Can Cooler Lab Worksheet
Can Cooler Answer Key

Optimizing Surface Area and Volume

Students investigate the relationship between surface area and volume, exploring heat retention, cooling fins, and container efficiency through the lens of geometry.

Lenny Avatar
Lenny
1/18
Lesson
Solid Structures Slides
Castle Component Workshop Worksheet
Castle Component Answer Key

Decomposing Composite 3D Figures

Students break down complex machine parts or architectural shapes into simple solids like prisms and cylinders to calculate total volume or surface area.

Lenny Avatar
Lenny
1/18
Lesson
Isometric Insight Slides
Dot Grid Draftsman Worksheet
Dot Grid Draftsman Reference Key

Drawing Isometric Perspectives

Learners practice drawing objects on isometric dot paper to maintain scale and proportion, comparing this view to standard perspective drawing to understand its utility in technical communication.

Lenny Avatar
Lenny
1/18
Lesson
Blueprint Basics Slides
Multiview Mastery Worksheet
Multiview Mastery Answer Key

Interpreting Orthographic Projections

Students learn to draw and interpret 'multiview' sketches (top, front, side) of 3D objects, understanding how 3D information is compressed into 2D plans for engineering and manufacturing.

Lenny Avatar
Lenny
1/18
Lesson
Metric Matrix Slides
Warped Paths Guide
Geometry Final Review

Tensors and Non-Euclidean Metrics

An advanced introduction to the metric tensor and non-Euclidean geometry, serving as a primer for General Relativity.

Lenny Avatar
Lenny
1/18
Lesson
Spherical Symmetry Slides
Orbital Shapes Handout
Laplace Lab Worksheet

Spherical Separation of Variables

Students solve Laplace's equation for systems with spherical symmetry, introducing Legendre polynomials and Spherical Harmonics.

Lenny Avatar
Lenny
1/18
Lesson
Field Flow Slides
Operator Map Sheet
Vector Vortex Worksheet

Vector Operators in Curvilinear Space

Students translate the Del operator into general curvilinear coordinates and apply these operators to physical vector fields.

Lenny Avatar
Lenny
1/18
Lesson
Space Sculpting Slides
Jacobian Jigsaw Activity
Space Sculpting Key

Volume and Integration

Focusing on integration, students construct volume and area elements (Jacobians) for spherical and cylindrical geometries and practice integrating scalar fields over complex 3D domains.

Lenny Avatar
Lenny
1/18
Lesson
Curvilinear Blueprint Slides
Scale Factor Sprint Worksheet
Coordinate Coach Guide

Generalizing Coordinates

Students derive basis vectors and scale factors for general orthogonal curvilinear coordinates and learn how to define position vectors in non-Cartesian geometries.

Lenny Avatar
Lenny
1/18
Lesson
Trajectory Designer Slides
Trajectory Designer Lab Report

Trajectory Designer

A culminating workshop where students design parametric equations to navigate a 'robot' through a constrained obstacle course.

Lenny Avatar
Lenny
1/18
Lesson
Flight Dynamics Slides
Flight Dynamics Worksheet

Flight Dynamics

Students apply parametric equations to real-world physics problems involving projectiles, calculating time of flight, range, and maximum height.

Lenny Avatar
Lenny
1/18
Lesson
Plumbing Formula Cheat Sheet
Pipe Power Math Test
Pipe Power Math Answer Key

Pipe Power Math

A comprehensive assessment and reference set for Tier 1 plumbing apprentices covering essential trade mathematics, including offsets, volumes, and conversions.

M

mbloomer

Other
3/2
Lesson
TSIA2 Math Practice Test
TSIA2 Math Answer Key

TSIA2 Math Mastery

A comprehensive practice session for the TSIA2 Math exam, focusing on quantitative reasoning, algebraic reasoning, geometry, and statistics.

JW

Jessica Waters

Math Teacher
2/20
Lesson
TSIA2 Math Practice Test
TSIA2 Math Answer Key

TSIA2 Math Mastery

A comprehensive 20-question practice test covering all four TSIA2 Math domains: Quantitative Reasoning, Algebraic Reasoning, Geometry, and Probability and Statistics.

JW

Jessica Waters

Math Teacher
2/20
Lesson
Target TSIA2 Math Worksheet
Target TSIA2 Math Key

TSIA2 Target Practice

A comprehensive 20-question practice test and answer key designed to prepare students for the TSIA2 Mathematics assessment, focusing on algebraic, geometric, and statistical reasoning.

JW

Jessica Waters

Math Teacher
1/21
Lesson
Complex Blueprints Teacher Guide
Complex Blueprints Presentation Slides
Complex Blueprints Student Worksheet
Complex Blueprints Graph Paper Activity

Complex Blueprints

A Pre-Calculus lesson introducing the complex plane (Argand diagram) and the calculation of the modulus (absolute value) of complex numbers using the Pythagorean theorem.

Lenny Avatar
Lenny
1/19
Lesson
Dimension Shift Worksheet
Dimension Shift Slides
Dimension Shift Discussion Cards
Dimension Shift Answer Key

Dimension Shift

A high-school level exploration of coordinate geometry that extends 2D distance concepts into 3D space and introduces the point-to-line distance formula for optimization problems. Students will visualize spatial diagonals and solve real-world distance challenges.

Lenny Avatar
Lenny
1/19
Lesson
Architect Guide Teacher Resource
Radius Blueprint Slides
Coordinate Builder Worksheet
Drafting Reflections Journal Prompts

Unit Circle Architect

Students will bridge the gap between special right triangle ratios and the Unit Circle by calculating coordinates for 30° and 60° angles using a hypotenuse of 1.

Lenny Avatar
Lenny
1/19
Lesson
Dimensions of Distance Lesson Plan
Spatial Solver Activity
Dimensions of Distance Slides
Spatial Solver Answer Key

Dimensions of Distance

A Pre-Calculus lesson focused on extending 2D distance concepts into 3D space to calculate the distance between a point and a plane. Students use coordinate geometry and algebraic manipulation to solve spatial problems.

Lenny Avatar
Lenny
1/19
Lesson
Arc Length Slides
Arc Length Teacher Guide
Arc Length Analysis Worksheet

Arc Length and Total Distance

Students derive and apply the arc length formula for parametric curves. They distinguish between displacement and total distance traveled along a curve.

Lenny Avatar
Lenny
1/18
Lesson
Vectors in Motion Slides
Kinematics Guide Teacher Resource
Particle Motion Vectors Worksheet

Particle Motion Vectors

Integrating physics concepts, students treat parametric equations as vector-valued functions. They calculate velocity and acceleration vectors, determine speed, and interpret direction.

Lenny Avatar
Lenny
1/18
Lesson
Concavity and Curvature Slides
Concavity Teacher Guide
Concavity Analysis Worksheet

Concavity and the Second Derivative

Students tackle the complex derivation of the second derivative for parametric equations. The lesson focuses on avoiding common misconceptions and using concavity to analyze curvature.

Lenny Avatar
Lenny
1/18
Lesson
Slopes on the Fly Slides
Tangency Guide Teacher Resource
Slopes on the Fly Worksheet

Parametric Differentiation and Tangents

This lesson establishes the chain rule application required to find dy/dx given x(t) and y(t). Students calculate the slope of tangent lines and identify points of horizontal and vertical tangency.

Lenny Avatar
Lenny
1/18
Lesson
Tracking the Path Slides
Bug Hunter Teacher Guide
Bug Path Analysis Worksheet

Introduction to Parametric Equations

Students explore the definition of parametric equations by manually plotting points based on a parameter 't'. They practice eliminating the parameter to convert parametric equations into rectangular form.

Lenny Avatar
Lenny
1/18
Lesson
Puzzle Master Slides
Match-Up Maze Challenge Sheet
Puzzle Master Answer Key 5

Puzzle Master Challenge

A gamified review where students match complex expressions with simplified forms to build fluency and pattern recognition.

Lenny Avatar
Lenny
1/18
Lesson
Identity Evolution Slides
Algebraic Ancestry Worksheet
Algebraic Ancestry Answer Key

Identity Evolution

Building on the primary Pythagorean identity, students use algebraic manipulation to derive secondary forms involving tangent, secant, cotangent, and cosecant.

Lenny Avatar
Lenny
1/18
Lesson
Ghost Graphs Slides
Overlapping Waves Lab Sheet
Ghost Graphs Teacher Lab Guide

Ghost Graphs

Students use graphing technology to observe overlapping trigonometric expressions, verifying that identities hold true for all values.

Lenny Avatar
Lenny
1/18
Lesson
Ratio Roadmaps Slides
Ratio Roadmaps Activity Sheet
Ratio Roadmaps Answer Key

Ratio Roadmaps

Learners investigate reciprocal functions (csc, sec, cot) and quotient identities to rewrite expressions in terms of sine and cosine.

Lenny Avatar
Lenny
1/18
Lesson
Pythagorean Roots Slides
Pythagorean Proofs Worksheet
Identity Insights Teacher Guide 1

Pythagorean Roots

Students utilize the distance formula and the unit circle to discover the fundamental Pythagorean identity, bridging the gap between Geometry and Algebra II.

Lenny Avatar
Lenny
1/18
Lesson
Circle Labyrinth Challenge
Circle Labyrinth Slides
Circle Labyrinth Answer Key

Circle Labyrinth

A mastery-based finale where students navigate a complex 'Circle Labyrinth' by synthesizing all learned segment theorems.

Lenny Avatar
Lenny
1/18
Lesson
Pulley Power Slides
Pulley Power Worksheet
Pulley Power Answer Key

Pulley Power

Students apply circle theorems to find lengths of internal and external common tangents, utilizing auxiliary lines and the Pythagorean theorem.

Lenny Avatar
Lenny
1/18
Lesson
Human Unit Circle Field Guide
Human Unit Circle Slides
Human Unit Circle Teacher Notes

The Human Unit Circle

A kinesthetic pre-calculus lesson where students physically construct a large-scale unit circle to verify trigonometric coordinates through measurement and movement.

Lenny Avatar
Lenny
1/19
Lesson
Dimensions of Distance Lesson Plan
Spatial Solver Activity
Dimensions of Distance Slides
Spatial Solver Answer Key

Dimensions of Distance

A Pre-Calculus lesson focused on extending 2D distance concepts into 3D space to calculate the distance between a point and a plane. Students use coordinate geometry and algebraic manipulation to solve spatial problems.

Lenny Avatar
Lenny
1/19
Lesson
Spatial Solutions Slides
Tiny House Blueprint Project Workbook
Design Justification Rubric

Applying Geometry to Design

In this culminating project, students solve a spatial design problem (the Tiny House Challenge), using geometric modeling to justify their layout and material choices.

Lenny Avatar
Lenny
1/18
Lesson
Efficiency Engine Slides
Can Cooler Lab Worksheet
Can Cooler Answer Key

Optimizing Surface Area and Volume

Students investigate the relationship between surface area and volume, exploring heat retention, cooling fins, and container efficiency through the lens of geometry.

Lenny Avatar
Lenny
1/18
Lesson
Solid Structures Slides
Castle Component Workshop Worksheet
Castle Component Answer Key

Decomposing Composite 3D Figures

Students break down complex machine parts or architectural shapes into simple solids like prisms and cylinders to calculate total volume or surface area.

Lenny Avatar
Lenny
1/18
Lesson
Isometric Insight Slides
Dot Grid Draftsman Worksheet
Dot Grid Draftsman Reference Key

Drawing Isometric Perspectives

Learners practice drawing objects on isometric dot paper to maintain scale and proportion, comparing this view to standard perspective drawing to understand its utility in technical communication.

Lenny Avatar
Lenny
1/18
Lesson
Blueprint Basics Slides
Multiview Mastery Worksheet
Multiview Mastery Answer Key

Interpreting Orthographic Projections

Students learn to draw and interpret 'multiview' sketches (top, front, side) of 3D objects, understanding how 3D information is compressed into 2D plans for engineering and manufacturing.

Lenny Avatar
Lenny
1/18
Lesson
Metric Matrix Slides
Warped Paths Guide
Geometry Final Review

Tensors and Non-Euclidean Metrics

An advanced introduction to the metric tensor and non-Euclidean geometry, serving as a primer for General Relativity.

Lenny Avatar
Lenny
1/18
Lesson
Spherical Symmetry Slides
Orbital Shapes Handout
Laplace Lab Worksheet

Spherical Separation of Variables

Students solve Laplace's equation for systems with spherical symmetry, introducing Legendre polynomials and Spherical Harmonics.

Lenny Avatar
Lenny
1/18
Lesson
Field Flow Slides
Operator Map Sheet
Vector Vortex Worksheet

Vector Operators in Curvilinear Space

Students translate the Del operator into general curvilinear coordinates and apply these operators to physical vector fields.

Lenny Avatar
Lenny
1/18
Lesson
Space Sculpting Slides
Jacobian Jigsaw Activity
Space Sculpting Key

Volume and Integration

Focusing on integration, students construct volume and area elements (Jacobians) for spherical and cylindrical geometries and practice integrating scalar fields over complex 3D domains.

Lenny Avatar
Lenny
1/18
Lesson
Curvilinear Blueprint Slides
Scale Factor Sprint Worksheet
Coordinate Coach Guide

Generalizing Coordinates

Students derive basis vectors and scale factors for general orthogonal curvilinear coordinates and learn how to define position vectors in non-Cartesian geometries.

Lenny Avatar
Lenny
1/18
Lesson
Workshop Problem Pack
Error Analysis Critique Sheet
Radial Mastery Assessment Key

Mastery Workshop

A synthesis session where students tackle complex problems combining slope, tangency, and coordinate conversion, including peer review and error analysis.

Lenny Avatar
Lenny
1/18
Lesson
Surface Solids Slides
Radial Revolution Lab
Radial Revolution Teacher Key

Surface Area Revolution

The sequence concludes with finding the surface area of solids formed by revolving polar curves around the polar axis or the line theta = pi/2.

Lenny Avatar
Lenny
1/18
Lesson
Radial Peak Slides
Limaçon Width Investigation Worksheet
Optimization Teacher Guide

Peak Polar Performance

Students apply derivatives to find maximum values of r (distance from origin) and y (height) to solve geometric optimization problems within polar contexts.

Lenny Avatar
Lenny
1/18
Lesson
Polar Arc Length Slides
Spiral Shell Worksheet
Spiral Shell Teacher Key

Polar Arc Length

Students derive and apply the arc length formula for polar curves, calculating the distance along spirals and cardioids.

Lenny Avatar
Lenny
1/18
Lesson
Pole Tangent Slides
Rose Curve Petal Worksheet
Pole Behavior Teacher Guide

Passing the Pole

A focused lesson on finding tangent lines at the origin (the pole) by determining where r=0 and analyzing the behavior of rose curves and other polar functions.

Lenny Avatar
Lenny
1/18
Lesson
Bounded Regions Slides
Shared Territory Worksheet
Bounded Regions Teacher Key

Bounded Polar Regions

Students find the area of regions shared by or bounded between two polar curves by identifying intersection points and setting up compound integrals.

Lenny Avatar
Lenny
1/18
Lesson
Radial Bounds Slides
Cardioid Boundary Investigation Worksheet
Horizontal Vertical Teacher Guide

Horizontal and Vertical Bounds

Students solve for theta values where dy/d-theta and dx/d-theta are zero to identify horizontal and vertical tangent lines on polar graphs, focusing on geometric interpretation.

Lenny Avatar
Lenny
1/18
Lesson
Inner Loop Slides
Lima\u00e7on Loop Lab
Inner Loop Teacher Key

Inner Loop Calculations

Focusing on lima\u00e7ons and rose curves, students learn to find integration limits by solving for r=0 and calculate the area of specific loops.

Lenny Avatar
Lenny
1/18
Lesson
Plumbing Formula Cheat Sheet
Pipe Power Math Test
Pipe Power Math Answer Key

Pipe Power Math

A comprehensive assessment and reference set for Tier 1 plumbing apprentices covering essential trade mathematics, including offsets, volumes, and conversions.

M

mbloomer

Other
3/2
Lesson
TSIA2 Math Practice Test
TSIA2 Math Answer Key

TSIA2 Math Mastery

A comprehensive practice session for the TSIA2 Math exam, focusing on quantitative reasoning, algebraic reasoning, geometry, and statistics.

JW

Jessica Waters

Math Teacher
2/20
Lesson
TSIA2 Math Practice Test
TSIA2 Math Answer Key

TSIA2 Math Mastery

A comprehensive 20-question practice test covering all four TSIA2 Math domains: Quantitative Reasoning, Algebraic Reasoning, Geometry, and Probability and Statistics.

JW

Jessica Waters

Math Teacher
2/20
Lesson
Target TSIA2 Math Worksheet
Target TSIA2 Math Key

TSIA2 Target Practice

A comprehensive 20-question practice test and answer key designed to prepare students for the TSIA2 Mathematics assessment, focusing on algebraic, geometric, and statistical reasoning.

JW

Jessica Waters

Math Teacher
1/21
Lesson
Dimensions of Distance Lesson Plan
Spatial Solver Activity
Dimensions of Distance Slides
Spatial Solver Answer Key

Dimensions of Distance

A Pre-Calculus lesson focused on extending 2D distance concepts into 3D space to calculate the distance between a point and a plane. Students use coordinate geometry and algebraic manipulation to solve spatial problems.

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Lenny
1/19
Lesson
Spatial Solutions Slides
Tiny House Blueprint Project Workbook
Design Justification Rubric

Applying Geometry to Design

In this culminating project, students solve a spatial design problem (the Tiny House Challenge), using geometric modeling to justify their layout and material choices.

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Lenny
1/18
Lesson
Efficiency Engine Slides
Can Cooler Lab Worksheet
Can Cooler Answer Key

Optimizing Surface Area and Volume

Students investigate the relationship between surface area and volume, exploring heat retention, cooling fins, and container efficiency through the lens of geometry.

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Lenny
1/18
Lesson
Solid Structures Slides
Castle Component Workshop Worksheet
Castle Component Answer Key

Decomposing Composite 3D Figures

Students break down complex machine parts or architectural shapes into simple solids like prisms and cylinders to calculate total volume or surface area.

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Lenny
1/18
Lesson
Isometric Insight Slides
Dot Grid Draftsman Worksheet
Dot Grid Draftsman Reference Key

Drawing Isometric Perspectives

Learners practice drawing objects on isometric dot paper to maintain scale and proportion, comparing this view to standard perspective drawing to understand its utility in technical communication.

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Lenny
1/18
Lesson
Blueprint Basics Slides
Multiview Mastery Worksheet
Multiview Mastery Answer Key

Interpreting Orthographic Projections

Students learn to draw and interpret 'multiview' sketches (top, front, side) of 3D objects, understanding how 3D information is compressed into 2D plans for engineering and manufacturing.

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Lenny
1/18
Lesson
Metric Matrix Slides
Warped Paths Guide
Geometry Final Review

Tensors and Non-Euclidean Metrics

An advanced introduction to the metric tensor and non-Euclidean geometry, serving as a primer for General Relativity.

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Lenny
1/18
Lesson
Spherical Symmetry Slides
Orbital Shapes Handout
Laplace Lab Worksheet

Spherical Separation of Variables

Students solve Laplace's equation for systems with spherical symmetry, introducing Legendre polynomials and Spherical Harmonics.

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Lenny
1/18
Lesson
Field Flow Slides
Operator Map Sheet
Vector Vortex Worksheet

Vector Operators in Curvilinear Space

Students translate the Del operator into general curvilinear coordinates and apply these operators to physical vector fields.

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Lenny
1/18
Lesson
Space Sculpting Slides
Jacobian Jigsaw Activity
Space Sculpting Key

Volume and Integration

Focusing on integration, students construct volume and area elements (Jacobians) for spherical and cylindrical geometries and practice integrating scalar fields over complex 3D domains.

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Lenny
1/18
Lesson
Curvilinear Blueprint Slides
Scale Factor Sprint Worksheet
Coordinate Coach Guide

Generalizing Coordinates

Students derive basis vectors and scale factors for general orthogonal curvilinear coordinates and learn how to define position vectors in non-Cartesian geometries.

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Lenny
1/18
Lesson
Particle Report Slides
Accelerator Data Report Assessment
Mastery Map Rubric

Synthesis Assessment

A comprehensive performance task where students analyze a raw data set from a simulated particle accelerator to generate a full kinematic report.

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Lenny
1/18
Lesson
Bug Hunt Slides
Logic Lock Activity Worksheet
Logic Guard Guide

Error Analysis in Coordinate Calculus

Students critique sample calculus work to identify and correct common misconceptions in limits of integration, derivative rules, and coordinate conversions.

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Lenny
1/18
Lesson
Overlap Ops Slides
Shaded Region Showdown Worksheet
Area Analysis Key

Advanced Area Challenges

A workshop focused on finding areas of overlapping polar curves and managing regions with multiple intersections or negative r-values.

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Lenny
1/18
Lesson
Orbital Motion Slides
Vector Velocity Workshop Worksheet
Motion Analysis Key

Parametric vs Polar Motion

An investigation into motion along polar curves, converting polar paths into parametric velocity and acceleration vectors to analyze particle movement.

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Lenny
1/18
Lesson
Path Power Slides
Coordinate Choice Challenge Worksheet
Efficiency Strategy Guide

System Selection Strategy

Students evaluate the efficiency of rectangular, parametric, and polar methods for various geometric problems, emphasizing when to switch systems for algebraic simplicity.

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Lenny
1/18
Lesson
Programmer Console Worksheet
Robot Vector Commands Slides
Grid Master Teacher Guide

Robot Vector Commands

A high-school geometry or pre-calculus lesson focusing on converting vectors from magnitude and direction to component form through a hands-on 'robot programming' simulation. Students use trigonometry to translate movement commands into x and y displacements.

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Lenny
1/19
Lesson
Architect Guide Teacher Resource
Radius Blueprint Slides
Coordinate Builder Worksheet
Drafting Reflections Journal Prompts

Unit Circle Architect

Students will bridge the gap between special right triangle ratios and the Unit Circle by calculating coordinates for 30° and 60° angles using a hypotenuse of 1.

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Lenny
1/19
Lesson
Surveyor Facilitation Guide
Ambiguous Case Slides
Swinging Side Investigation Worksheet
Ambiguous Case Answer Key

Drafting the Unknown

A high school trigonometry lesson focused on the Law of Sines and the SSA Ambiguous Case, featuring a physical construction activity to visualize the 'swinging side' phenomenon.

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Lenny
1/19
Lesson
SSS Angle Showdown Presentation
SSS Angle Showdown Worksheet
SSS Angle Showdown Answer Key

SSS Angle Showdown

This lesson focuses on using the Law of Cosines to solve for unknown angles in SSS (Side-Side-Side) triangles, emphasizing algebraic rearrangement and verification through the relationship between side lengths and angle measures.

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Lenny
1/19
Lesson
Collision Course Slides
Collision Course Worksheet

Symmetry and Intersection of Polar Graphs

The sequence concludes with advanced graphing analysis involving symmetry tests and finding intersection points. Students learn why algebraic solutions sometimes miss intersection points at the pole.

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Lenny
1/18
Lesson
Complex Curves Slides Space Snail and Roses
Curve Collector Worksheet

Analyzing Roses and Lima\u00e7ons

Students systematically explore classical polar curves. They analyze the effect of coefficients on the number of petals in rose curves and the presence of inner loops in lima\u00e7ons.

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Lenny
1/18
Lesson
Basic Curves Slides
Simple Shapes Worksheet

Graphing Basic Polar Curves

An investigation into circles and lines in the polar plane. Students predict and verify the graphs of equations like r = a, theta = b, and r = a cos(theta), establishing a foundation for more complex shapes.

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Lenny
1/18
Lesson
System Switch Slides
System Switch Worksheet

Converting Between Polar and Cartesian Systems

Students derive the conversion formulas using right triangle trigonometry. They practice converting both coordinates and full equations, identifying when a polar form offers a simpler representation than the Cartesian equivalent.

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Lenny
1/18
Lesson
Radar Navigation Slides
Radar Intercept Worksheet

Navigating the Polar Coordinate System

Students learn the conventions of polar coordinates (r, theta) and practice plotting points, including those with negative radii. They explore the non-uniqueness of polar coordinates by finding multiple representations for a single point.

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Lenny
1/18
Lesson
Arc Length Slides
Arc Length Teacher Guide
Arc Length Analysis Worksheet

Arc Length and Total Distance

Students derive and apply the arc length formula for parametric curves. They distinguish between displacement and total distance traveled along a curve.

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Lenny
1/18
Lesson
Vectors in Motion Slides
Kinematics Guide Teacher Resource
Particle Motion Vectors Worksheet

Particle Motion Vectors

Integrating physics concepts, students treat parametric equations as vector-valued functions. They calculate velocity and acceleration vectors, determine speed, and interpret direction.

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Lenny
1/18
Lesson
Concavity and Curvature Slides
Concavity Teacher Guide
Concavity Analysis Worksheet

Concavity and the Second Derivative

Students tackle the complex derivation of the second derivative for parametric equations. The lesson focuses on avoiding common misconceptions and using concavity to analyze curvature.

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Lenny
1/18
Lesson
Slopes on the Fly Slides
Tangency Guide Teacher Resource
Slopes on the Fly Worksheet

Parametric Differentiation and Tangents

This lesson establishes the chain rule application required to find dy/dx given x(t) and y(t). Students calculate the slope of tangent lines and identify points of horizontal and vertical tangency.

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Lenny
1/18
Lesson
Tracking the Path Slides
Bug Hunter Teacher Guide
Bug Path Analysis Worksheet

Introduction to Parametric Equations

Students explore the definition of parametric equations by manually plotting points based on a parameter 't'. They practice eliminating the parameter to convert parametric equations into rectangular form.

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Lenny
1/18
Lesson
Puzzle Master Slides
Match-Up Maze Challenge Sheet
Puzzle Master Answer Key 5

Puzzle Master Challenge

A gamified review where students match complex expressions with simplified forms to build fluency and pattern recognition.

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Lenny
1/18
Lesson
Identity Evolution Slides
Algebraic Ancestry Worksheet
Algebraic Ancestry Answer Key

Identity Evolution

Building on the primary Pythagorean identity, students use algebraic manipulation to derive secondary forms involving tangent, secant, cotangent, and cosecant.

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Lenny
1/18
Lesson
Ghost Graphs Slides
Overlapping Waves Lab Sheet
Ghost Graphs Teacher Lab Guide

Ghost Graphs

Students use graphing technology to observe overlapping trigonometric expressions, verifying that identities hold true for all values.

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Lenny
1/18
Lesson
Ratio Roadmaps Slides
Ratio Roadmaps Activity Sheet
Ratio Roadmaps Answer Key

Ratio Roadmaps

Learners investigate reciprocal functions (csc, sec, cot) and quotient identities to rewrite expressions in terms of sine and cosine.

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Lenny
1/18
Lesson
Pythagorean Roots Slides
Pythagorean Proofs Worksheet
Identity Insights Teacher Guide 1

Pythagorean Roots

Students utilize the distance formula and the unit circle to discover the fundamental Pythagorean identity, bridging the gap between Geometry and Algebra II.

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Lenny
1/18
Lesson
Master Mechanics Slides
Master Mechanics Challenge Set
Master Mechanics Teacher Guide

Master Mechanics

A culminating workshop where students solve complex, multi-constraint problems like viewing angles and projectile efficiency.

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Lenny
1/18