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Operations and Algebraic Thinking
Understand Addition and Understand Subtraction
Student Sample: Educreations
Make Ten CCSS.Math.Content.K.OA.A.3
Make Ten CCSS.Math.Content.K.OA.A.4
Addition Strategy
Subtract with a Pirate
Subtraction Strategy
Math Stories
Make Ten
Add with a Pirate
Math Stories CCSS.Math.Content.K.OA.A.1 and 2