Lesson plan

Add within 100 by decomposing and regrouping into places

teaches Common Core State Standards CCSS.Math.Content.2.NBT.B.5 http://corestandards.org/Math/Content/2/NBT/B/5
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Big Idea: Numbers can be decomposed and recombined many different ways. This lesson builds on students' understanding of tens and ones and properties of addition. The task builds students' flexible thinking by providing a concrete experience of the lessons big idea, numbers can be decompose and recombined into places. Vocabulary: add, subtract, decompose, tens, ones, equation, equivalent Special Materials: Connecting Cubes