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lesson 21
1 hour

Solve Double and Doubles Plus 1


Description

Objective: Visualize and solve doubles and doubles plus 1 with 5-group cards.

In Lesson 21, students begin to internalize doubles and doubles plus 1 as they work with visual representations of these problems (1.OA.6). As students almost take a mental picture of these doubles and doubles plus 1 dot configurations, they can call on these images to quickly assist them when faced with these problems in the future.

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Credits

From EngageNY.org of the New York State Education Department. Grade 1 Mathematics Module 1, Topic F, Lesson 21. Available from engageny.org/resource/grade-1-mathematics-module-1-topic-f-lesson-21; accessed 2015-05-29.
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