Unit 1, Lesson 19
Solve Problems Involving Arrays
Grade 3
Preparation
Lesson Purpose
The purpose of this lesson is for students to represent an array situation using an equation with a symbol for the unknown number and solve problems.
Lesson Narrative
In previous lessons, students represented equal-groups situations using arrays and multiplication expressions, with an emphasis on equal groups. Equal groups continue to be emphasized in this lesson, as students learn that finding the product in a multiplication equation gives the total number of objects in the related array.
As students connect arrays to equations, they may write
- Explain (orally) a strategy for representing and solving multiplication problems involving arrays.
- Represent multiplication problems involving arrays using equations with a symbol for the unknown.
- Let’s solve problems involving arrays.
Required Preparation
None
Teacher Reflection Questions
Who has been sharing their ideas in class lately? Make a note of students whose ideas have not been shared and look for an opportunity for them to share their thinking in tomorrow’s lesson.
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