Lesson plan

# 9. Fluently add and subtract within five (FP)

teaches Common Core State Standards CCSS.Math.Content.K.OA.A.2 http://corestandards.org/Math/Content/K/OA/A/2
teaches Common Core State Standards CCSS.Math.Content.K.OA.A.5 http://corestandards.org/Math/Content/K/OA/A/5
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP8 http://corestandards.org/Math/Practice/MP8

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Lesson objective: Fluently add and subtract within five.

This lesson helps to build fluency with addition and subtraction within five. A game is used here because it supports quick recognition of addition and subtraction facts. This work develops students' understanding that efficiency is a goal in problem solving.

Students engage in Mathematical Practice 8 (Look for and express regularity in repeated reasoning) as they practice quickly recalling number partners for five.

Key vocabulary:

• number partners

Special materials needed:

• counters
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• 9. Fluently add and subtract within five (FP)