Description
Students continue solving equations using properties of equality and inverse operations to relate their steps to the steps taken when solving problems algebraically. In this lesson, students decontextualize word problems to create equations that model given situations. Students justify their solutions by comparing their algebraic steps to the steps taken when using a tape diagram. Have students work in cooperative groups and share out their solutions on chart paper. Use the class discussion as a way to have students view the differences in problem-solving approaches.
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Credits
From EngageNY.org of the New York State Education Department. Grade 7 Mathematics Module 2, Topic C, Lesson 23.
Available from engageny.org/resource/grade-7-mathematics-module-2-topic-c-lesson-23; accessed 2015-05-29.
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