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Lesson Plan

Add within 20 by using known doubles

teaches Common Core State Standards CCSS.Math.Practice.MP1
teaches Common Core State Standards CCSS.Math.Practice.MP7
teaches Common Core State Standards CCSS.Math.Content.2.OA.B.2
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Big Idea: Numbers can be decomposed and added many different ways. This lesson builds on students' knowledge of doubles. Through their work on the task students determine how doubles can be used as a strategy to add, deepening their understanding of different ways to decompose and recombine numbers while problem solving. Vocabulary: doubles Special Materials: Playing/Digit Cards (without face cards)
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