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Lesson Plan

Proportional Pasta Sauce: Analyzing a proportional relationship with like units and compute the ratio using a ratio table and multiplicative reasoning

teaches Common Core State Standards CCSS.Math.Practice.MP5 http://corestandards.org/Math/Practice/MP5
teaches Common Core State Standards CCSS.Math.Content.7.RP.A.1 http://corestandards.org/Math/Content/7/RP/A/1
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This lesson builds on students' understanding of ratios by using a recipe to calculate unit ratios from fractional amounts. Students use ratios and proportional reasoning to correct a cooking error which relates to unit ratios. Students use strategies such as making a table or using multiplicative reasoning. This builds toward finding unit rates and ratios using fractional amounts as well as applying understanding of fraction multiplication and division. Big Ideas: Understand that the relationship between the quantities in a ratio is proportional and can be computed using a ratio table or multiplicative reasoning. Understand how to compute a unit ratio using fractional amounts. Vocabulary: ratio table, multiplicative reasoning, multiplicative inverse, reciprocal Special Materials: Measuring cups and spoons (optional)
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