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Lesson Plan

Use tip percentages to solve real world problems by working with tip amount to find total cost

teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
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.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Content.7.RP.A.3 http://corestandards.org/Math/Content/7/RP/A/3
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Big Ideas: Percent tip is relative to the size of the whole. A percent is another way to write a decimal or fraction that compares a part to a whole where the whole is 100. In this task, students will explore the fact that a tip will increase the total cost of dinner. The increase is directly related to the tip percentage and the price of dinner. They will analyze a given set of criteria involving tip to work backwards with percents. As they explore the problem where the tip percentage is constant and dinner prices vary, they will deepen their understanding that the percent is relative to the whole. Vocabulary: tip, percent Special Materials: Calculator as needed.
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