Description
In this lesson, students will transition from solving equations using tape diagrams to solving equations algebraically by making zero (using the additive inverse) and making one (using the multiplicative inverse). They will justify their work by identifying which algebraic property they used for each step in solving the problems. Students explain their work by writing out how they solved the equations step by step and relate each step to those used with a tape diagram.
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Credits
From EngageNY.org of the New York State Education Department. Grade 7 Mathematics Module 2, Topic C, Lesson 22.
Available from engageny.org/resource/grade-7-mathematics-module-2-topic-c-lesson-22; accessed 2015-05-29.
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