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Illustrative Mathematics
Illustrative Mathematics: Boys and Girls, Variation 1
This word problem focuses on the Put Together/Take Apart contexts for addition and subtraction. Students may use objects, pictures, or equations to represent their solutions. Examples and explanations are provided.
Better Lesson
Better Lesson: Put Together or Take Away?
First graders learn the basics of 1.OA.1 by mixing addition and subtraction word problems from day 1. The focus question is: Put together or take away?