Lesson plan

9. Using equations to solve problems involving percent error (FP)

teaches Common Core State Standards CCSS.Math.Content.7.EE.B.3 http://corestandards.org/Math/Content/7/EE/B/3
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.MP3 http://corestandards.org/Math/Practice/MP3
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Lesson objective: Use equations to solve problems involving percent error.

This lesson helps to build procedural skills with percent error. Equations are used here because they help students make sense of the complex relationships between the various values. This work develops students' understanding that equations can be used to solve problems involving percents.

Students engage in Mathematical Practice 1 (make sense and persevere in solving problems) as they use equations to make sense of the complex relationships between the values in problems involving percent error.

Key vocabulary:

  • percent error
  • percent
  • equation
  • equivalent decimal
  • equivalent fraction