### Book Chapter

Renninger, K.A., S.A. Weimar, and E.A. Klotz. 1998. Teachers and Students Investigating and Communicating about Geometry: The Math Forum. In *Designing Learning Environments for Developing Understanding of Geometry and Space*, edited by R. Lehrer and D. Chazan, 465-487. Mahwah, NJ: Lawrence Erlbaum.

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