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Lesson Plan

Understanding the difference between ratio and rate by looking at examples and non-examples

teaches Common Core State Standards CCSS.Math.Content.6.RP.A.2 http://corestandards.org/Math/Content/6/RP/A/2
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP5 http://corestandards.org/Math/Practice/MP5
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Big Idea: Rates are special types of ratios where unlike quantities are being compared. In this lesson, students expand upon their understanding of ratios as a comparison of two quantities using division to generate a definition that takes into account different measures. Students analyze nine different situations to decide whether they are rates, ratios, both rates and ratios, or neither. This lesson lays the foundation that builds towards a deeper understanding of rates and unit rates so that students can use them to measure and compare costs and speeds. Vocabulary: ratio, rate, unit rate, fraction, part-to-part ratio, part-to-total ratio Special Materials: Scissors Copies of the supplemental handout Sheet of blank paper
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