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Stephanie M. Butman

Research on students' learning has made it clear that learning happens through an interaction with others and through communication. In the classroom, the more students talk and discuss their ideas, the more they learn. However, within a one-hour period, it is hard to give everyone an equal opportunity to talk and share their ideas. Organizing students in groups distributes classroom talk more widely and equitably (Cohen and Lotan 1997).

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Fred Dillon and Kevin Dykema

This problem ties into the real-life measurement found in the Richter scale.

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Andrew M. Tyminski

Skip counting around the room (SCATR) is a strategy that promotes numerical fluency and attention to number relationships. Variations of SCATR for students in K'grade 6 are shared.

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Kara L. Imm and Meredith D. Lorber

By exploring an open-ended investigation involving proportional reasoning, students were able to walk through both problem solving and modeling.

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Mary F. Mueller and Carolyn A. Maher

Learn how five characteristics of tasks and learning environments led these sixth graders to successful problem solving using direct and indirect reasoning to justify their solutions, make their justifications public, and respond to mathematical arguments.