Unit 4, Lesson 11# Demonstrate the possible whole number side lengths of rectangles using the associative property

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In this lesson, students use a given number of square units to determine all possible whole number side lengths of rectangles with that area. For example, they find by using the associative property that 4 by 12, 6 by 8, 1 by 48, and 2 by 24 arrays all have an area of 48 square units.