Seriating Objects by Length and Capacity with Child 14 (Early Math Collaborative)

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A kindergarten student finds a way to sort cups by capacity.
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.
BIG IDEA:
All measurement involves a “fair” comparison.
When children have many opportunities to make and discuss comparisons, they become more competent with the procedural requirements of measurement. Making direct comparisons in the preschool classroom is critical preparation for later, more sophisticated indirect measurement activities and builds the conviction that to be accurate, measurement must be fair.