# 12. Write and define expressions related to equations (FP)

teaches Common Core State Standards CCSS.Math.Content.7.EE.B.4a http://corestandards.org/Math/Content/7/EE/B/4/a
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: Practice finding the meaning of the expressions that model an algebraic approach to problem solving.

This lesson helps to build procedural skill with translating mathematical expressions. Students are presented with variable expressions related to a real-world scenario. They define each expression using the context of the situation. This work develops students' understanding that an algebraic approach to problem solving looks at the relationships between the quantities and uses variables, numbers, and operations to describe the relationships.

Students engage in Mathematical Practice 4 (Model with mathematics) as they relate each expression to what it models in the real-world scenario. Different variations of the mathematical expressions are used to extend their understanding of what each expression models in a specific context.

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