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Lesson Plan

Calculate area models with equal-sized rows by using repeated addition

teaches Common Core State Standards CCSS.Math.Content.2.G.A.2
teaches Common Core State Standards CCSS.Math.Content.2.OA.C.4
teaches Common Core State Standards CCSS.Math.Practice.MP7
teaches Common Core State Standards CCSS.Math.Practice.MP4

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Big Ideas: Repeated addition shows equal groups added together multiple times. Rectangles can be partitioned into rows and columns with equal sized units. This lesson builds upon students' work with partitioning rectangles, writing equations, and even and odd numbers. In this task students will design gardens arrays. Students will see that the some numbers, like 18, may be arranged in different ways. This lesson builds towards students' conceptual understanding of arrays and multiplication. Vocabulary: rows, columns, arrays, repeated addition, units, rectangle Special Materials: colored square tiles
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