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Lesson Plan

Divide positive and negative numbers using real-world contexts

teaches Common Core State Standards CCSS.Math.Content.7.NS.A.2b
teaches Common Core State Standards CCSS.Math.Practice.MP3
teaches Common Core State Standards CCSS.Math.Practice.MP7
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Big Idea: The same rule for determining whether products will be positive or negative can be used for quotients. This lesson builds upon students' previous work with division of rational numbers in 6th and 7th grade. Students need to complete three short division problems involving positive and negative numbers. By comparing the quotients in these problems, students can generalize a strategy to find the sign of a quotient in any division problem. The mathematical concepts in this lesson build toward students' future work simplifying expressions and solving equations. Vocabulary: Quotient, Dividend, Divisor Special Materials: None
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