Series: Focus on the Child

Change Unknown Problem 1 with Child 5

Duration: 00:34Having video problems?

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This second grader uses derived facts to solve a problem fluently. Just one example of mental math strategies used by elementary students.

Focus on the Child videos are taken from one-on-one interviews with individual children. The interviews are designed to elicit evidence of children’s mathematical thinking. They are not teaching episodes or formal assessments.