Description
Students represent whole numbers as lengths on a number line, identifying unknown numbers by using mental benchmarks or reference points.
Downloads
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Credits
From EngageNY.org of the New York State Education Department. Grade 2 Mathematics Module 7, Topic E, Lesson 21.
Available from engageny.org/resource/grade-2-mathematics-module-7-topic-e-lesson-21; accessed 2015-05-29.
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