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.