Unit 1, Lesson 18
Represent Arrays with Expressions
Grade 3
Preparation
Lesson Purpose
The purpose of this lesson is for students to represent multiplication situations with arrays and multiplication expressions.
Lesson Narrative
In a previous lesson, students arranged objects into arrays and described the arrays in terms of equal groups. In this lesson, students write expressions to represent arrays to further connect arrays and multiplication (MP2).
As students connect arrays to expressions, they may write
- Represent multiplication situations using arrays and multiplication expressions.
- Let’s represent situations with arrays and expressions.
Required Materials
Activity 1
Required Preparation
Activity 1
- Each group of 2 will need 20 connecting cubes or counters.
Teacher Reflection Questions
In an upcoming lesson, students will learn about the commutative property of multiplication. What do you notice in their work from today’s lesson that you might leverage in that future lesson?
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