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Direct linkWeiss, Michael; Herbst, Patricio; Chen, Chialing – Educational Studies in Mathematics, 2009
We investigate experienced high school geometry teachers' perspectives on "authentic mathematics" and the much-criticized two-column proof form. A videotaped episode was shown to 26 teachers gathered in five focus groups. In the episode, a teacher allows a student doing a proof to assume a statement is true without immediately justifying it,…
Descriptors: Focus Groups, Teacher Attitudes, Mathematics Education, Geometry
