Lesson plan

12. Use models to identify equivalent expressions (FP)

teaches Common Core State Standards CCSS.Math.Content.6.EE.A.3 http://corestandards.org/Math/Content/6/EE/A/3
teaches Common Core State Standards CCSS.Math.Content.6.EE.A.4 http://corestandards.org/Math/Content/6/EE/A/4
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
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Lesson objective: Use area models to determine the equivalency of expressions.

This lesson helps to build procedural skill with equivalency of expressions. Area models are used here because it supports a visual/tactile understanding of an abstract topic. This work develops students' understanding that equivalent expressions have the same value.

Students engage in Mathematical Practice 4 model with mathematics as they create and interpret area models to identify equivalent expressions. Students will connect the different arrangements of equivalent areas with different looking expressions and recognize that models of equivalent expressions will have the same area.

Key vocabulary:

  • area models
  • equivalent expressions

Special materials needed:

  • algebra tiles (optional)