Students’ evolving meaning about tangent line with the mediation of a dynamic geometry environment and an instructional example space

In this paper I report a lengthy episode from a teaching experiment in which fifteen Year 12 Greek students negotiated their definitions of tangent line to a function graph. The experiment was designed for the purpose of introducing students to the notion of derivative and to the general case of tan...

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Bibliographic Details

Main Author:	Irene Biza
Format:	Default Article
Published:	2011
Subjects:	Tangent line Mediation of meaning Instructional example space Dynamic geometry software Local straightness
Online Access:	https://hdl.handle.net/2134/8867
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