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Lesson Plan

5. Represent arrays and distinguish between rows and columns using pictorial representations (FP)

teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
teaches Common Core State Standards CCSS.Math.Content.2.OA.C.4 http://corestandards.org/Math/Content/2/OA/C/4
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Lesson objective: Create arrays to represent a given number.

This lesson helps to build fluency with creating arrays. Drawing arrays is used here because it requires students to create arrays with an equal number of objects in each row and column. This work develops students' understanding that a group of objects can be organized in an array and thought of as a number of equal groups.

Students engage in Mathematical Practice 7 (Look for and make use of structure).  As students compose arrays they recognize that the array structure is a collection of rows or columns and that can be seen as a group of objects as they create arrays. 

Key vocabulary:

  • arrange
  • array
  • column
  • equal
  • group
  • objects
  • row

 

Related content

Appears in

Using arrays for foundations of multiplication

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