Lesson plan

Solve problems using the distributive property

teaches Common Core State Standards CCSS.Math.Content.7.NS.A.2a http://corestandards.org/Math/Content/7/NS/A/2/a
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Big Ideas: We can apply our understanding of multiplication as a way of finding the total number of objects in a set of equal groups to positive and negative integers. Rational numbers can be used to describe real world contexts and can be multiplied. This lesson builds upon students' previous work with the distributive property and multiplication. In this task, students will use a menu to calculate the total cost of a meal for the week. They must use two plans to determine the cost, and compare the two plans. Through this work, students will extend their understanding of the distributive property with negative and positive rational numbers. The mathematical concepts in this lesson build towards students' future work simplifying expressions and solving equations. Vocabulary: Distributive Property, product, sum Special Materials: None