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Lesson Plan

Copy of 7. Use equivalent ratios to solve problems (MELD)

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teaches Common Core State Standards CCSS.Math.Content.6.RP.A.3a http://corestandards.org/Math/Content/6/RP/A/3/a
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
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Lesson objective: Use "between" and "within" relationships in equivalent ratios in order to find missing values in a ratio table. 

This lesson provides an opportunity for students to apply their knowledge and understanding of ratios to a real-life situation. Students are asked to help teachers determine how many teams of five students they can make for a basektball tournament. 

Key Concept students will use: 

  • Equivalent ratios show the same multiplicative relationship; the "between" relationship shows that both quantities were scaled in the same way; the "within" relationship means that the ratios have the same quotient, and therefore the same unit rate

Skills students will use:

  • identifying multiplicative relationships between quantities
  • identifying between and within relationships in equivalent ratios
  • using multiplicative relationships to find missing values in ratio tables

Students engage in Mathematical Practice 1 (make sense of problems and persevere in solving them) as they solve a challenging, multi-step problem. Students can use a variety of strategies and tools to organize their thinking and determine how many teams of five students the teachers can form for the basketball tournament.

Key vocabulary: 

  • "between" relationship
  • "within" relationship
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