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Fact Families in First Grade

3/10/2017

 
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This week the first graders looked closely at the relationship between addition and subtraction.  Dominoes were the main instructional material.  Children practiced determining the three numbers that can be associated with any domino- the  number of dots on each half and the total number of dots.  These three numbers are used to construct a fact family, consisting of two addition and two subtraction facts.  Children practiced writing the four number models for a domino in horizontal and vertical format.   

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