1.OA.2.Solve+word+problems+that+call+...

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Operations and Algebraic Thinking 1.OA 2.Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
 * Represent and solve problems involving addition and subtraction. **

Think Math 1.4.6, 1.4.7 *”Mouse Count” (Teaching Number Sense-1st)p. 52-60 *Coming & Going Stories” (Teaching Number Sense-1st) p. 81-85 (2 days) *”Twelve Cats and Dogs” from Investigations Building Number Sense p. 38 Think Math 1.9.5, 1.9.6, 1.9.7, 1.9.8

List of resources: http://www.k-5mathteachingresources.com/1st-grade-number-activities.html