A 2-page print-ready student worksheet with structured side-by-side workspaces for Base-Ten Drawings, Expanded Form, and Standard Algorithm across 4 scaffolded addition and subtraction problems (including regrouping across zero).

A 2-page visual exemplar document demonstrating mastery of 3-digit addition (378 + 245) and subtraction with regrouping across zero (602 - 247). Showcases Base-Ten Block Drawings, Expanded Form, and Standard Algorithm side-by-side with modeled student thinking.

A 2-page teacher reference document featuring a comprehensive proficiency rubric (Levels 1-4) for 3-digit addition and subtraction, along with concrete observational look-for's and prompt questions for the three core place value strategies.

A comprehensive teacher guide and answer key for the Comparison Clash lesson. Includes structural pacing notes, detailed diagnostic guides for common student misconceptions, guiding questions, and clear visual answer keys.

A highly engaging student matchup activity where 4th graders connect Toy Lab word problems to their correct tape diagrams, identifying additive vs. multiplicative models, writing equations, and drawing their own models.

High-impact classroom slides that introduce additive vs. multiplicative comparison using the Toy Lab theme. Includes visual tape diagrams, comparative analyses of math keywords, and step-by-step model building.

An instructional teacher guide for the 3-digit subtraction lesson, outlining pedagogy, common student misconceptions, a mini-lesson script, and concrete strategies for teaching subtraction with regrouping, zero-crossing, and inverse operations.

The complete teacher answer key for the Decoder Subtraction Worksheet. It features fully-solved vertical calculations showing regrouping steps and inverse operations, highlighted in a bright blue 'grading ink' style.

A clean, plain subtraction check-for-understanding (CFU) worksheet with no theme. It features vertical standard 3-digit subtraction, horizontal missing number equations (including an addition equation solved using subtraction), and an 'inverse addition calculation verification' question based on the user's attachment.

A multi-page math exit ticket pack featuring 6 unique practice sets. Each set contains 15 mixed math problems (5 single-digit multiplication, 5 simple division with remainders, and 5 four-digit vertical addition) paired with Zones of Regulation emotional check-in and reflection scales.

A single-page math exit ticket featuring 15 mixed math problems (5 single-digit multiplication, 5 simple division with remainders, and 5 four-digit vertical addition), paired with Zones of Regulation check-in and reflection scales.

A 3-page teacher-facing answer key matching the student worksheet pack, with step-by-step calculations and solutions highlighted in red bold text.

A 3-page printable student worksheet pack containing matching activities, grid-based vertical money addition/subtraction, tiered word problems, and an engaging "Design-Your-Own Receipt" creative math project.

An interactive and visually engaging slide deck covering decimal alignment, regrouping across zeros, multi-step addition, and calculating change from $10.00.

Printable board game, rules, and matching multi-step problem cards for the "Quest for the Math Relic" math workshop game targeting OA.3.

Student's 5-day quest journal containing warm-ups, guided practice, independent stations, and critical word problems for OA.3 (Days 16-20).