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Author: Morgan Aguiniga

Standard 1.0A: Add and subtract within 20. 

Relate counting to addition and subtraction (e.g., by counting on 2 to add 2)

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. 

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Addition and Subtraction Worksheet

Addition and Subtraction Slideshow

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Video Tutorial on adding and subtracting within 20