Unit 4, Lesson 2, Grade 3 icon
Unit 4, Lesson 2

Decompose and recompose shapes to compare areas

EngageNY 60 min(s)

In this lesson, students cut apart paper rectangles into same-size squares to concretely define a square unit, specifically square inches and centimeters. Then they use these units to make rectangular arrays that have the same area but different side lengths, and they find the area of rectangular shapes by counting square units.

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