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ERIC Number: ED489758
Record Type: Non-Journal
Publication Date: 2004-Jul
Pages: 8
Abstractor: Author
Teacher's Practices and Dynamic Geometry
Belfort, Elizabeth; Carlos Guimaraes, Luiz
International Group for the Psychology of Mathematics Education, 28th, Bergen, Norway, July 14-18, 2004
In this paper we analyze instructional materials supported by a Dynamic Geometry software, which were produced by teachers during an in-service training program. We discuss illustrative examples, as well as the outcomes of the critical discussions that took place during the presentations of these materials by the teachers. In order to analyze these materials, our conception of geometry involved a full spectrum of activities, from concrete exploration and experimentation, through conjecturing, problem solving, and on to formal proof. We also took into consideration results from research on the didactical potential of Dynamic Geometry (DG). It is argued that these programs can help us address fundamental difficulties in developing geometrical thought, as they can provide new representations of geometrical objects. Our aims are to evaluate how close from fulfilling this potential seem to be the instructional materials produced by the teachers themselves and to discuss the main factors influencing teachers' conceptions while developing of these materials. [For complete proceedings, see ED489632.]
International Group for the Psychology of Mathematics Education, 35 Aandwind Street, Kirstenhof, Cape Town, 7945, South Africa. Web site:
Publication Type: Opinion Papers; Speeches/Meeting Papers
Education Level: Higher Education; Secondary Education
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A