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Lesson Plan

5. Solve multiplication equations using the associative property (FP)

teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6
teaches Common Core State Standards CCSS.Math.Content.3.OA.B.5 http://corestandards.org/Math/Content/3/OA/B/5
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Lesson objective: Use the associative property to solve multiplication problems.

This lesson helps to build procedural skill with using the associative property as a strategy to solve problems. The area model is used here because it can illustrate the equivalency between the original expression and new expression created using the associative property. This work develops students' understanding that we can use the properties of multiplication and the relationship between multiplication and division to help us solve problems.

Students engage in Mathematical Practice MP.6 (attend to precision) as they write equivalent equations using the associative property and make decisions on which numbers to group together to make multiplication easier.

Key vocabulary:

  • area model
  • equation
  • factor
  • grouping
  • multiplication
  • parentheses
  • property

Special materials needed:

  • grid paper
  • square tiles
Related content

Appears in

Solving problems involving area

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