Lenny LearningLenny
Create
Explore
Workspace
LoginSign up
MathEnglish Language ArtsScience & EngineeringSocial StudiesGlobal LanguagesHealth & Physical EducationSpecial EducationCounseling & Life SkillsArts & CreativityESL
Lenny LearningLenny
Lenny Learning
About
Training
Pricing
Support
Contact
© 2026 Lenny Learning Inc.
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

Numbers & Counting

SequencesLessonsMaterialsVideos
  1. Math

Numbers & Counting

SequencesLessonsMaterialsVideos
SequencesLessonsMaterialsVideos

One-to-one correspondence, numeral identification, and comparison of quantities using terms like greater than or less than. Establishes the foundation for numerical literacy and early arithmetic operations.

Counting ObjectsOne-to-one correspondence and cardinality skills through counting discrete objects in various arrangements. Strengthens number recognition and the understanding of quantity.
Number NamesIdentification and spelling of number words from zero through millions. Connects numerical symbols to their written linguistic representations to strengthen mathematical literacy.
Comparing NumbersMathematical symbols including greater than (>), less than (<), and equal to (=) to evaluate numerical relationships. Builds fluency in ordering sets and comparing quantities from single digits to multi-digit integers.
Lesson
Place Value Blueprint Anchor Chart
Magnitude Comparison Lab Worksheet
Progress Monitoring Log Tracker

Building to One Hundred

Extends number sense to 100, emphasizing place value (tens and ones), magnitude comparison, and identifying patterns in the 100-chart.

NC

Nicole Camp

Psychologist
3/4
Lesson
Decomposition Anchor Chart
Ten Frame Fact Practice Worksheet

Breaking Numbers Down

Develops the ability to compose and decompose numbers within 20, focusing on the power of 10 and building basic addition/subtraction fact fluency.

NC

Nicole Camp

Psychologist
3/4
Lesson
Foundations Teacher Script
Quantity Counting Lab Worksheet

Foundations of Quantity

Focuses on identifying numbers to 20, mastering 1:1 correspondence through physical and visual counting, and developing perceptual subitizing skills.

NC

Nicole Camp

Psychologist
3/4
Lesson
Number Safari Flashcards
Shape Explorer Flashcards
Wild Match Worksheet
Safari Wall Posters
Math Symbol Map

Safari Math Quest

A foundational math lesson exploring numbers 1-10, basic 2D and 3D shapes, and introductory mathematical symbols through an engaging jungle safari theme.

H

hstarks

Other
3/3
Lesson
Money Master Slides
Cashier Challenge Worksheet
Change Maker Task Cards
Market Math Quiz
Money Master Answer Key

Money Masters

A comprehensive lesson on identifying US currency, counting totals, and calculating change up to $10 using a marketplace theme.

RJ

Ruth Jenkins-Ellis

Special Education Teacher
3/3
Lesson
Blast Off Slides
Star Sequence Worksheet
Star Sequence Answer Key
Galaxy Gaps Worksheet
Galaxy Gaps Answer Key

Teen Trek

A foundational math lesson focused on identifying and sequencing numbers in the 'teens' (11-19) using a space exploration theme. Students will practice starting from a given teen number and counting forward to build numerical fluency.

V

victoria.lesniak

Special Education Teacher
2/26
Lesson
Warm Up 1 Choral 10s
Warm Up 2 Choral 5s
Warm Up 3 Choral 2s
Warm Up 4 Choral 10s NonZero
Warm Up 5 Choral Back 10s
Warm Up 6 Choral Back 5s

Training Camp Warm Ups

A set of daily choral count warm-ups focusing on skip-counting patterns within 100 to build number sense and preparation for mental subtraction.

T

tmatthews

Math Teacher
2/25
Lesson
Olympic Final Slides
Olympic Final Assessment Sheet
Olympic Final Reflection Sheet

Olympic Final Assessment

Students demonstrate their mastery of all subtraction strategies in a comprehensive unit assessment themed around the Olympic Medal Ceremony.

T

tmatthews

Math Teacher
2/25
Lesson
Strategic Slalom Slides Review
Strategic Slalom Practice Sheet
Strategic Slalom Exit Ticket

Strategic Slalom Review

Students practice choosing the most efficient mental math strategy for various subtraction problems, using a skiing slalom theme to visualize navigating different obstacles.

T

tmatthews

Math Teacher
2/25
Lesson
Double Grab Grab Slides
Double Grab Grab Practice Sheet
Double Grab Grab Exit Ticket

Double Grab Grab Strategy

Students extend their doubles strategy to solve subtraction problems that are two away from a double fact (e.g., 16 - 6).

T

tmatthews

Math Teacher
2/25
Lesson
Shredding Near Doubles Slides
Shredding Near Doubles Practice Sheet
Shredding Near Doubles Exit Ticket

Shredding Near Doubles Strategy

Students use their knowledge of doubles to solve subtraction problems that are just one away from a double fact (e.g., 15 - 7).

T

tmatthews

Math Teacher
2/25
Lesson
The Adjuster Slides
The Adjuster Practice Sheet
The Adjuster Exit Ticket

The Adjuster Strategy

Students learn to subtract 7 by first 'pretending' it's 10 and then adjusting by adding 3 back, rounding out the "Pretend 10" strategy block.

T

tmatthews

Math Teacher
2/25
Lesson
Eight is Enough Slides
Eight is Enough Practice Sheet
Eight is Enough Exit Ticket

Eight is Enough Strategy

Students learn to subtract 8 by first 'pretending' it's 10 and then adjusting by adding 2 back, continuing the speed skating theme.

T

tmatthews

Math Teacher
2/25
Lesson
The Great Chase Slides
The Great Chase Practice Sheet
The Great Chase Exit Ticket

The Great Chase Strategy

Students learn to subtract 9 by first 'pretending' it's 10 and then adjusting by adding 1 back, visualizing the speed skating track.

T

tmatthews

Math Teacher
2/25
Lesson
Power Play Frames Slides
Power Play Frames Practice Sheet
Power Play Frames Exit Ticket

Power Play Frames

Students use double ten-frames to visualize the 'Making 10' strategy, moving pucks to fill the first frame before subtracting the rest.

T

tmatthews

Math Teacher
2/25
Lesson
Slapshot Ten Slides
Slapshot Ten Practice Sheet
Slapshot Ten Exit Ticket

Slapshot Ten Strategy

Students learn to decompose the subtrahend to subtract through 10, using a hockey theme to visualize hitting the target of 10 first.

T

tmatthews

Math Teacher
2/25
Lesson
Speed Skating Lines Slides
Speed Skating Lines Practice Sheet
Speed Skating Lines Exit Ticket

The Long Track Lines

Students use 'Open Number Lines' to visualize subtraction as distance, specifically for problems where counting back is less efficient.

T

tmatthews

Math Teacher
2/25
Lesson
Bobsled Bridges Slides
Bobsled Bridges Practice Sheet
Bobsled Bridges Exit Ticket

Bobsled Bridges

Students refine their number line strategy by learning to jump back to 10 first, then the rest, for more efficient subtraction.

T

tmatthews

Math Teacher
2/25
Lesson
Bobsled Backtrack Slides
Bobsled Backtrack Practice Sheet
Bobsled Backtrack Exit Ticket

Bobsled Backtrack

Students learn to use a number line to subtract by 'jumping back' along a track, using a bobsled theme to visualize the path.

T

tmatthews

Math Teacher
2/25
Lesson
Half Pipe Halves Slides
Half Pipe Halves Practice Sheet
Half Pipe Halves Exit Ticket

Half Pipe Halves

Students use their knowledge of doubles to solve subtraction facts (halves), visualizing the symmetry of a snowboarding half-pipe.

T

tmatthews

Math Teacher
2/25
Lesson
Ten Steps Addition Worksheet
Mixed Math Steps Worksheet
Ten Steps Addition Key
Mixed Math Steps Key

Simple Math Steps

A collection of super simple, visually clear math worksheets designed for elementary learners, featuring addition and subtraction with visual counting supports.

MR

Maddy Roberts

Special Education Teacher
3/4
Lesson
Duck Dash Slides
Pond Patrol Teacher Guide
Duck Pond Count Worksheet
Duck Counting Mats Resource

Pond Patrol Counting

A high-energy, duck-themed 30-minute lesson focusing on counting 1-20, one-to-one correspondence, and number ordering. Students will use visual slides, hands-on counting cards, and practice worksheets to master number recognition and representation.

CN

Coleman Newell

Special Education Teacher
3/4
Lesson
Sea Scout Task Cards
Ocean Explorer Recording Sheet
Deep Sea Match Game
Teacher's Reef Guide

Ocean Number Explorers

A collection of ocean-themed math activities focused on counting, identifying numbers 1-20, and developing one-to-one correspondence through task cards and a matching game.

RP

Riley Pate

Special Education Teacher
3/4
Lesson
Place Value Blueprint Anchor Chart
Magnitude Comparison Lab Worksheet
Progress Monitoring Log Tracker

Building to One Hundred

Extends number sense to 100, emphasizing place value (tens and ones), magnitude comparison, and identifying patterns in the 100-chart.

NC

Nicole Camp

Psychologist
3/4
Lesson
Decomposition Anchor Chart
Ten Frame Fact Practice Worksheet

Breaking Numbers Down

Develops the ability to compose and decompose numbers within 20, focusing on the power of 10 and building basic addition/subtraction fact fluency.

NC

Nicole Camp

Psychologist
3/4
Lesson
Foundations Teacher Script
Quantity Counting Lab Worksheet

Foundations of Quantity

Focuses on identifying numbers to 20, mastering 1:1 correspondence through physical and visual counting, and developing perceptual subitizing skills.

NC

Nicole Camp

Psychologist
3/4
Lesson
Number Safari Flashcards
Shape Explorer Flashcards
Wild Match Worksheet
Safari Wall Posters
Math Symbol Map

Safari Math Quest

A foundational math lesson exploring numbers 1-10, basic 2D and 3D shapes, and introductory mathematical symbols through an engaging jungle safari theme.

H

hstarks

Other
3/3
Lesson
Counting Cabin Lesson Guide
Cabin Numbers Slides
Acorn Count Activity
Forest Find Game
Number Nook Worksheet

Counting Cabin

A foundational math lesson for K-2 special education students focusing on counting, quantity, and one-to-one correspondence up to 20 through a cozy, cabin-themed environment.

T

theresa.beauchamp

Special Education Teacher
3/2
Lesson
Hydrology Hunters Slides
Hydrology Hunters Worksheet
Hydrology Hunters Answer Key

Hydrology Hunters

A lesson where students use numerical data and counting to track the movement of water through the water cycle, focusing on interpreting charts and comparing quantities.

JM

Jessica Morse

Special Education Teacher
2/26
Lesson
Math Scout Worksheet
Math Scout Answer Key

Math Scout Mission

A comprehensive diagnostic assessment for 1st-grade students focusing on Iowa state standards for Number Sense, Place Value, and Operations. This lesson provides a baseline for student understanding at the beginning or middle of the year.

MG

Mo Godin

Counselor
2/26
Lesson
Cross Out Quest Worksheet
Minus Mission Slides
Cross Out Quest Key

Subtraction Squad

A foundational introduction to subtraction within 5, focusing on the concept of 'taking away' through visual aids and hands-on crossing out strategies.

RP

Riley Pate

Special Education Teacher
2/26
Lesson
Final Mystery Mission Assessment

Final Mystery Mission

A summative assessment and review to confirm mastery of missing addend strategies within 10 and 20.

Lenny Avatar
Lenny
2/25
Lesson
Lab Training Materials

Lab Training Cards

Hands-on practice and small group activities using flashcards and collaborative games to build fluency with missing addends.

Lenny Avatar
Lenny
2/25
Lesson
Number Line Tracks Worksheet

Number Line Tracks

Using number lines as a counting-on strategy. Students track 'footprints' on a number line to find the missing addend.

Lenny Avatar
Lenny
2/25
Lesson
Ten Frame Mystery Handout

Ten Frame Trails

Introduction to missing addends using ten frames. Students use counters and visual grids to find how many more are needed to reach a total.

Lenny Avatar
Lenny
2/25
Lesson
Detective Briefing Guide
Mystery Case Slides
Evidence Log Worksheet
Case File Cards
Solved Case Exit Ticket
Evidence Log Answer Key

Missing Piece Mystery

A Tier 3 intensive intervention lesson focused on finding missing addends within 10 using a detective-themed 'mystery' approach with manipulatives and word problems.

Lenny Avatar
Lenny
2/25
Lesson
Ten Power Slides
Ten Strategy Teacher Guide
Double Frame Mat
Strategy Sprint Sheet
Missing Neighbor Cards

Ten Strategy Secrets

A deep dive into the 'Make a Ten' strategy, moving from simple pairs of ten to using ten as a benchmark for adding larger numbers.

MG

Mo Godin

Counselor
2/24
Lesson
Snowy Story Problems Worksheet Plus
Snowy Story Problems Answer Key
Snowy Story Problems Worksheet Plus

Winter Math Chill Lesson

A lesson focused on solving addition and subtraction word problems with numbers up to 20 using winter-themed scenarios and visuals.

EE

Erin Esswein

Special Education Teacher
2/24
Lesson
Lily Pad Leap Level 2 Worksheet

Gator Gulp Groups

Students continue practicing with visual groups, increasing the complexity to numbers 0-10. Focus is on accurate counting and symbol orientation with the 'alligator mouth' visual.

A

ahatcher

Special Education Teacher
2/24
Lesson
Chomp Champions Slides
Chomp Champion Board Game
Swamp Success Exit Ticket

Chomp Champions

Review and mastery of all three comparison symbols (greater than, less than, equal to) across groups and numerals. Students demonstrate proficiency through a game and a final assessment.

A

ahatcher

Special Education Teacher
2/24
Lesson
Place Value Blueprint Anchor Chart
Magnitude Comparison Lab Worksheet
Progress Monitoring Log Tracker

Building to One Hundred

Extends number sense to 100, emphasizing place value (tens and ones), magnitude comparison, and identifying patterns in the 100-chart.

NC

Nicole Camp

Psychologist
3/4
Lesson
Decomposition Anchor Chart
Ten Frame Fact Practice Worksheet

Breaking Numbers Down

Develops the ability to compose and decompose numbers within 20, focusing on the power of 10 and building basic addition/subtraction fact fluency.

NC

Nicole Camp

Psychologist
3/4
Lesson
Foundations Teacher Script
Quantity Counting Lab Worksheet

Foundations of Quantity

Focuses on identifying numbers to 20, mastering 1:1 correspondence through physical and visual counting, and developing perceptual subitizing skills.

NC

Nicole Camp

Psychologist
3/4
Lesson
Hydrology Hunters Slides
Hydrology Hunters Worksheet
Hydrology Hunters Answer Key

Hydrology Hunters

A lesson where students use numerical data and counting to track the movement of water through the water cycle, focusing on interpreting charts and comparing quantities.

JM

Jessica Morse

Special Education Teacher
2/26
Lesson
Math Scout Worksheet
Math Scout Answer Key

Math Scout Mission

A comprehensive diagnostic assessment for 1st-grade students focusing on Iowa state standards for Number Sense, Place Value, and Operations. This lesson provides a baseline for student understanding at the beginning or middle of the year.

MG

Mo Godin

Counselor
2/26
Lesson
Number Neighbors Anchor Chart
Sequence Sprint Cards
Neighbor Wall Display
Neighbor Watch Worksheet

Number Neighbors

A foundational lesson exploring the temporal concepts of 'before' and 'after' using numbers and everyday sequences to build early math and logic skills.

C

cnorton

Other
2/25
Lesson
The Slapshot Sprint Slides
The Slapshot Sprint Practice Sheet

The Slapshot Sprint

Students practice rapid fluency by choosing the best strategy for a series of mixed problems in a timed hockey sprint.

T

tmatthews

Math Teacher
2/25
Lesson
The Pretend 10 Sprint Slides
The Pretend 10 Sprint Exit Ticket

The Pretend 10 Sprint

Students practice the fastest tricks for subtracting numbers that are 9, 8, or 7 away from the total.

T

tmatthews

Math Teacher
2/25
Lesson
The Mixed Strategy Relay Slides
Mixed Review Practice Sheet

The Mixed Strategy Relay

Students refine their subtraction fluency by learning to choose the most efficient strategy for any given problem.

T

tmatthews

Math Teacher
2/25
Lesson
Skeleton Close Doubles Slides
Close to Doubles Practice Sheet
Skeleton Close Doubles Exit Ticket

Close to Doubles Mastery

Students master facts that are close to doubles by relating them to their halves fluency, using a skeleton racing theme to emphasize speed and precision.

T

tmatthews

Math Teacher
2/25
Lesson
Warm Up 1 Choral 10s
Warm Up 2 Choral 5s
Warm Up 3 Choral 2s
Warm Up 4 Choral 10s NonZero
Warm Up 5 Choral Back 10s
Warm Up 6 Choral Back 5s

Training Camp Warm Ups

A set of daily choral count warm-ups focusing on skip-counting patterns within 100 to build number sense and preparation for mental subtraction.

T

tmatthews

Math Teacher
2/25
Lesson
Olympic Final Slides
Olympic Final Assessment Sheet
Olympic Final Reflection Sheet

Olympic Final Assessment

Students demonstrate their mastery of all subtraction strategies in a comprehensive unit assessment themed around the Olympic Medal Ceremony.

T

tmatthews

Math Teacher
2/25
Lesson
Strategic Slalom Slides Review
Strategic Slalom Practice Sheet
Strategic Slalom Exit Ticket

Strategic Slalom Review

Students practice choosing the most efficient mental math strategy for various subtraction problems, using a skiing slalom theme to visualize navigating different obstacles.

T

tmatthews

Math Teacher
2/25
Lesson
Double Grab Grab Slides
Double Grab Grab Practice Sheet
Double Grab Grab Exit Ticket

Double Grab Grab Strategy

Students extend their doubles strategy to solve subtraction problems that are two away from a double fact (e.g., 16 - 6).

T

tmatthews

Math Teacher
2/25
Lesson
Shredding Near Doubles Slides
Shredding Near Doubles Practice Sheet
Shredding Near Doubles Exit Ticket

Shredding Near Doubles Strategy

Students use their knowledge of doubles to solve subtraction problems that are just one away from a double fact (e.g., 15 - 7).

T

tmatthews

Math Teacher
2/25
Lesson
The Adjuster Slides
The Adjuster Practice Sheet
The Adjuster Exit Ticket

The Adjuster Strategy

Students learn to subtract 7 by first 'pretending' it's 10 and then adjusting by adding 3 back, rounding out the "Pretend 10" strategy block.

T

tmatthews

Math Teacher
2/25
Lesson
Eight is Enough Slides
Eight is Enough Practice Sheet
Eight is Enough Exit Ticket

Eight is Enough Strategy

Students learn to subtract 8 by first 'pretending' it's 10 and then adjusting by adding 2 back, continuing the speed skating theme.

T

tmatthews

Math Teacher
2/25
Lesson
The Great Chase Slides
The Great Chase Practice Sheet
The Great Chase Exit Ticket

The Great Chase Strategy

Students learn to subtract 9 by first 'pretending' it's 10 and then adjusting by adding 1 back, visualizing the speed skating track.

T

tmatthews

Math Teacher
2/25
Lesson
Power Play Frames Slides
Power Play Frames Practice Sheet
Power Play Frames Exit Ticket

Power Play Frames

Students use double ten-frames to visualize the 'Making 10' strategy, moving pucks to fill the first frame before subtracting the rest.

T

tmatthews

Math Teacher
2/25
Lesson
Slapshot Ten Slides
Slapshot Ten Practice Sheet
Slapshot Ten Exit Ticket

Slapshot Ten Strategy

Students learn to decompose the subtrahend to subtract through 10, using a hockey theme to visualize hitting the target of 10 first.

T

tmatthews

Math Teacher
2/25