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Students put all of their addition and subtraction skills together to solve equations. In this lesson, students put all of their addition and subtraction skills together to solve equations. Julia ...

Twenty-four first-grade children were asked to write number sentences and select appropriate alternative number sentences for addition and subtraction word problems. Responses were qualitatively ...

This is a preview. Log in through your library . Abstract This study investigated 40 first-grade teachers' pedagogical content knowledge of children's solutions of addition and subtraction word ...