Student worksheet for Lesson 5 (Double Up). Includes a doubling accelerator chart for 2s and 4s, a challenge on halving facts, and a real-world word problem about tires in a parking lot using the double-double strategy.

Lesson 5 slides on 'Double Up' strategy for 2s and 4s. Teaches the 'double-double' method through visual patterns and mental math routines. Includes a step-by-step breakdown of multiplying by 4.

Student worksheet for Lesson 4 (Family Ties). Features fact family houses to complete, a 'Think Multiplication' strategy section for solving division, and an area for students to draw their own array and generate a corresponding fact family.

Lesson 4 slides on Fact Families and Inverse Operations. Uses 'The Missing Piece' warm-up and a 'Fact Family House' visual to connect multiplication and division. Includes conceptual explanations of how multiplication helps with division.

Student worksheet for Lesson 3 (Reverse Engineering). Practice partitioning items into jars and grouping items to find the number of racks. Connects multiplication facts to division problems in the investigator's notes.

Lesson 3 slides introducing division as the inverse of multiplication. Explains partitioning versus grouping and introduces formal division notation using a 'Reverse Engineering' theme.

Student worksheet for Lesson 2 (Array Architecture). Focuses on labeling rows and columns, drafting arrays from expressions, and solving a 'Brick Wall' array word problem.

Lesson 2 slides on Array Architecture. Introduces rows and columns using 'Which One Doesn't Belong?', anatomy of an array diagrams, and real-world array connections.

Teacher facilitation guide for Lesson 1 (Group Power). Includes pacing, high-leverage concepts from ALN, IM routines, specific teacher prompts for the Number Talk, and an answer key for the student worksheet.

Student worksheet for Lesson 1 (Group Power). Features problems on identifying equal groups, drawing groups from expressions, and a word problem scenario with Beetle jars. Includes an exit ticket section.

Lesson 1 visual slide deck introducing the concept of equal groups and multiplication notation. Includes a 'How Many Do You See?' warm-up, real-world examples, and a 'Notice and Wonder' prompt.

A cumulative assessment worksheet for the final lesson of the Operation Patterns Lab. Students must solve a complex two-step word problem by creating a tape diagram, writing a variable-based equation, and performing a reasonableness check.

A slide deck for the culminating lesson of the Operation Patterns Lab. It features a cumulative "Final Boss" problem that requires students to apply all their learned skills (rounding, tape diagrams, equations) and celebrates their completion of the intervention lab.

A student worksheet for Lesson 11 where students summarize their learning by identifying and explaining various arithmetic rules and properties they have discovered. Includes "Why" detective prompts and a pattern challenge.

A slide deck for Lesson 11 summarizing key arithmetic patterns discovered throughout the lab. Includes a Math Talk focused on explaining the logic behind odd/even sum rules and a visual summary of addition, multiplication, and square patterns.

A student worksheet for Lesson 10 where students solve complex two-step problems by first mapping out the required operations and then calculating each step. Includes a section for self-checking with an estimate.

A slide deck for Lesson 10 focusing on choosing operations in multi-step word problems. It breaks down the actions of addition, subtraction, multiplication, and division in context and models how to map out a two-step problem.

A student worksheet for Lesson 9 where students practice representing two-step word problems using equations with a letter standing for the unknown quantity. Includes multiple choice for equation matching and space for solving.