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lesson 17
1 hour

Understanding the Equal Sign


Description

Objective: Understand the meaning of the equal sign by pairing equivalent expressions and constructing true number sentences. Day 1

Lessons 17 and 18 ask students to use pictorial representations (pictures and 5-groups) to write expressions and to demonstrate that they are equivalent by using the equal sign. This work with the equal sign precedes the lessons on commutativity in order to allow students to construct true number sentences.

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Credits

From EngageNY.org of the New York State Education Department. Grade 1 Mathematics Module 1, Topic E, Lesson 17. Available from engageny.org/resource/grade-1-mathematics-module-1-topic-e-lesson-17; accessed 2015-05-29.
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