Data Detective Agency

A comprehensive math lesson focused on 3-digit addition with regrouping, utilizing visual base-ten block models and place value charts to guide students from conceptual understanding to standard algorithm mastery.

A highly visual, hands-on lesson that introduces double-digit addition with regrouping using base-ten blocks. Students learn to draw ones blocks, group ten of them together to trade for a tens rod, and record the regrouping process in the standard algorithm.

A targeted subtraction without regrouping intervention lesson using base-ten block pictorial representations. Designed for RTI small groups to build conceptual understanding by physically crossing out represented tens and ones before moving to abstract vertical subtraction.

A comprehensive lesson containing high-yield, retro-themed multiplication flashcards for rapid mental recall. Features a fold-and-cut design that guarantees perfect double-sided alignment on any printer.

A review lesson that connects the standard subtraction algorithm with concrete base-ten blocks and expanded form subtraction, helping students understand the 'why' behind regrouping.

Week 4 of the ESY Wildlife Detective curriculum. Focuses on a comprehensive mixed spiral math review (NJSLS operations, place value, and measurement) through a culminating multi-day outdoor expedition challenge.

Week 3 of the ESY Wildlife Detective curriculum. Focuses on the foundations of multiplication (NJSLS 2.OA, 3.OA) through repeated addition, skip-counting animal clusters, and creating grid-based habitat arrays.

Week 2 of the ESY Wildlife Detective curriculum. Focuses on place value, estimation, and measurement (NJSLS 1.MD, 2.MD, 3.MD) by measuring nest diameters, estimating burrow lengths, and understanding animal sizes.

Week 1 of the ESY Wildlife Detective curriculum. Focuses on addition and subtraction mastery within 20 and 100 by tracking animal footprints, counting steps, and analyzing forest trail data. Scaffolded for grades 1-4.

A collection of three clean, distraction-free 3-digit addition worksheets and answer keys, each containing a mixed set of 5 regrouping and 5 non-regrouping vertical calculations formatted for print.

A collection of mixed 3-digit addition and subtraction worksheets and answer keys, featuring mixed operations with and without regrouping. Excellent for cumulative review and operational fluency.

A collection of 3-digit subtraction worksheets and answer keys, featuring mixed regrouping and non-regrouping problems. Formatted for clean, distraction-free printouts.

A collection of 3-digit addition worksheets and answer keys, featuring mixed regrouping and non-regrouping problems. Ideal for building computation speed and accuracy with clean, distraction-free printouts.

A 2nd-grade math mystery adventure where students act as detective deputies to solve addition, subtraction, place value, time, money, and geometry clues to locate the missing school mascot.

A lesson focused on solving addition and subtraction word problems within 100 without regrouping, featuring join to, take from, and comparison scenarios.

A structured 2-digit addition and subtraction lesson featuring highly supportive blueprint-style grids. Color-coded columns and visual step indicators help students master math alignment without regrouping.

A double-header math homework sequence containing a Coordinate Graphing worksheet and a Making Change worksheet, along with their respective answer keys.

A skip-counting bingo game lesson designed to build fluency in patterns from 2 through 12. Includes standard, clean, high-contrast student bingo boards, a caller card kit with teacher tracking master, and an instructional pacing guide.

A gamified retro-arcade approach to mastering the 1-12 multiplication tables. Includes a 4-day daily drill booklet, a high-intensity 100-fact speed run mixed list, a master 12x12 speed grid, and a quick-grading teacher guide with an error-analysis rubric.

Investigates student recognition of shape attributes, partitioning rectangles into grids, and counting vertices prior to 3rd-grade geometry and area.

Evaluates prerequisite skills for time, measurement, and bar/picture graphs to ensure readiness for complex measurement topics.

Assesses understanding of equal shares, partitioning shapes into halves, thirds, and fourths, and naming fraction parts prior to 3rd-grade fraction units.

Diagnoses readiness for 3rd-grade place value, multi-digit addition, subtraction, and estimation, based on 2nd-grade standards.

Focuses on prerequisite skills for multiplication and division, including equal groups, skip counting, arrays, and repeated addition.

A diagnostic pretest and intervention package designed to assess and remediate 2nd-grade prerequisite math skills (equal groups, repeated addition, and basic arrays) before starting 3rd-grade Unit 1 Multiplication and Division. Includes a student quiz, targeted intervention worksheets, and a comprehensive teacher guide with rubrics and answer keys.

A structured progress monitoring kit for division and multiplication, designed with retro-game aesthetics. Includes two highly-scaffolded visual probes, an interactive student tracker, and a comprehensive teacher guide with IEP goals.

A lesson introducing subtraction without borrowing using color-coded grids and place value alignment. Students practice aligning digits in tens and ones columns before expanding to hundreds.

A highly visual, structured lesson teaching the standard U.S. addition algorithm within 1,000 with regrouping. It features color-coded grid worksheets, place-value scaffolding, and step-by-step slides designed with dedicated carryover/regrouping boxes for student support.

A math mastery lesson featuring leveled printable worksheets for addition within 1000. It includes custom grid layouts, visual cues, and dedicated regrouping boxes above the tens and hundreds columns to support students as they master single- and double-regrouping strategies.

An assessment and supporting resources for students who struggle with multi-step word problems. It features simplified language, rebus-style icon clues, and a step-by-step graphic organizer workspace embedded in every problem.

A scaffolded math toolkit designed to help students break down multi-step word problems using visual graphic organizers, reading accommodations, and a detailed teacher error-tracking framework.

A mental math lesson introducing the compensation strategy for addition within 20 using a playful candy shop theme. Students shift amounts between addends to create 'friendly tens' (e.g., 9 + 5 becomes 10 + 4), practicing this mentally during a slide-guided warm-up and on paper with a themed student worksheet.

A targeted lesson designed to help students analyze word problems, identify the underlying action or relationship (joining, separating, grouping, or sharing), and translate them into correct number sentences across all four basic operations.

A targeted lesson focused on building student confidence and accuracy in composing and decomposing numbers across a single place value in addition and subtraction, utilizing their preferred problem-solving strategy.

Weeks 16-20 (Sessions 31-40) focusing on advanced problem solving, error analysis, self-regulation checklists for 80% accuracy, and the Session 36 Progress Monitoring milestone.

Weeks 11-15 (Sessions 21-30) focusing on multi-step addition and subtraction word problems (sums/differences 50-100) using visual schemas and Session 27 Progress Monitoring.

Weeks 6-10 (Sessions 11-20) focusing on introducing bar models and tape diagrams to represent addition and subtraction word problems within 100, plus Session 18 Progress Monitoring.

Weeks 1-5 (Sessions 1-10) focusing on 3-digit place value foundations, base-ten visual modeling, and single-step operations. Includes the Session 9 Progress Monitoring milestone.

A collection of 20 high-frequency printable math worksheets designed to build addition and subtraction fluency within 20, containing standard vertical algorithm problems.