## Lesson: Using Arrays to Show Multiplication Concepts

Developing the Concept

In this lesson, students will apply their understanding of arrays to the Commutative Property of Multiplication.

**Materials:** square grid transparency, erasable markers, and an overhead projector for demonstration; square grid paper and crayons for each student

**Preparation:** none

**Prerequisite Skills and Background:** Students should know how to use arrays to multiply.

**Wrap-Up and Assessment Hints**

Have students explain the relationship between the arrays they made and the corresponding multiplication sentences. Encourage them to use mathematical language in their explanations. Then have them use arrays to model the Commutative Property of Multiplication.