Lesson plan

Design arrays by creating equal columns and rows and writing an equation

teaches Common Core State Standards CCSS.Math.Content.2.G.A.2 http://corestandards.org/Math/Content/2/G/A/2
teaches Common Core State Standards CCSS.Math.Content.2.OA.C.4 http://corestandards.org/Math/Content/2/OA/C/4
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Big Ideas: Rectangles can be partitioned into rows and columns with equal sized square units which makes it easier to find the total number of units. Repeated addition can help to find the sum of rows and columns. This lesson builds upon students' work with partitioning shapes and repeated addition. In this lesson, students will design boxes which hold chocolate candy. Students will get more practice conceptualizing how some numbers can be partitioned in different ways when you create a rectangular array. This lesson builds towards students' future work with multiplication. Vocabulary: array, partition, rectangle, repeated addition, rows, columns, even, odd Special Materials: square tiles