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lesson 12
1 hour

“Add To” With Change Unknown


Description

Objective: Solve add to with change unknown math stories using 5-group cards.

Lesson 12 continues with solving add to with change unknown problems, as students use their 5-group cards to count on to find the unknown change in quantity. Throughout these two lessons, students explore the symbol for the unknown (1.OA.1) as both a question mark and an open box.

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From EngageNY.org of the New York State Education Department. Grade 1 Mathematics Module 1, Topic C, Lesson 12. Available from engageny.org/resource/grade-1-mathematics-module-1-topic-c-lesson-12; accessed 2015-05-29.
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