Examples, solutions, and videos to help Grade 3 students learn how to relate arrays to tape diagrams to model the commutative property of multiplication.
Common Core Standards: 3.OA.5, 3.OA.7, 3.OA.1, 3.OA.2, 3.OA.3, 3.OA.4, 3.OA.6
Download the Worksheets for Grade 3, Module 1, lesson 15 (pdf)
Lesson 15 Concept Development
Pictorial: Relate arrays with tape diagrams.
2 × 4 = 4 × 2
Pictorial - Abstract: Model commutativity using arrays and tape diagrams.
Lesson 15 Homework
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