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ERIC Number: ED489752
Record Type: Non-Journal
Publication Date: 2004-Jul
Pages: 8
Abstractor: Author
Descriptions and Conflicts in Dynamic Geometry
Giraldo, Victor; Belfort, Elizabeth; Carvalho, Luiz Mariano
International Group for the Psychology of Mathematics Education, 28th, Bergen, Norway, July 14-18, 2004
We expand the theoretical perspective based on the notions of description and conflict, which was previously used to the learning of functions and calculus, to the learning of deductive geometry supported by Dynamic Geometry (DG) environments. Based on prior studies on functions and on the potential role of a DG software, we analyze a case study in which the student's reaction to a problem strongly differ from the pattern observed during in-service courses for teachers. We argue that this student's different background allowed her to experience a conflict, which has given her means to expand her conceptualization. Finally, we contrast this behavior with the narrowing effect of mere formulae application, which has been observed in the typical response given by teachers to the same problem during in-service courses. [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: Secondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A