Add and subtract with objects. Fingers, Unifix cubes, etc. Then move on to adding and subtracting with pictures. Identify mistakes in representation. If given 2 + 3 and a drawing of 1 + 3, students should be able to identify the mistake in both ways. For example, given the Unifix cubes *|***, Becky said it represents 2 + 3. Is she correct? Going the other way, Becky was told to represent 2 + 3, so Becky made *|*** with Unifix cubes. Is she correct?
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One goal of kinder addition is to have them move between 2 + 3, the representation of 2 + 3 with Unifix cubes, the representation of 2 + 3 with a drawing, perhaps by drawing circles, and word problems, such as two wolves were howling, three more joined them, how many wolves are now howling?
K.OA.A.1: Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations. Include groups with up to ten objects.