Lesson Plan

Pizza Profits: Practicing writing equations to represent proportional relationships

teaches Common Core State Standards CCSS.Math.Content.7.RP.A.2 http://corestandards.org/Math/Content/7/RP/A/2
teaches Common Core State Standards CCSS.Math.Content.7.RP.A.2c http://corestandards.org/Math/Content/7/RP/A/2/c
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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Students will practice writing equations to represent the proportional relationship between quantities such as total cost and the number of items when a constant rate of change exists. This lesson builds on students’ work with the constant of proportionality in graphs and equations. Students will write an equation for the cost of making pizzas and the profit earned from selling the pizzas. Then they will create tables to prove their equations are correct. The mathematical concepts in this lesson build toward students’ future work with slope. Big Idea: The constant of proportionality relates the independent and dependent variables in an equation. Vocabulary: constant of proportionality, equation, dependent variable, independent variable
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