Lesson plan

# 13. Analyze equations representing percent change (FP)

teaches Common Core State Standards CCSS.Math.Content.7.RP.A.3 http://corestandards.org/Math/Content/7/RP/A/3
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP5 http://corestandards.org/Math/Practice/MP5

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Lesson objective: Analyze features of equivalent equations representing percent change.

Students practice calculating percent change by analyzing equations representing a real world situation. Ratio equations are used here to help students understand the connection between the values in a ratio and the percent change. This work develops students' understanding that equations can be set up in different ways to represent percent problems.

Students engage in Mathematical Practice 2: Students reason abstractly and quantitatively as they analyze algebraic equations to represent real-life situations involving percent.

Key vocabulary:

• percent change
• percent increase
• ratio equation

Special materials needed:

• graph paper
• calculators (as needed)