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ERIC Number: EJ774915
Record Type: Journal
Publication Date: 2007-Nov
Pages: 17
Abstractor: Author
Reference Count: 0
ISSN: ISSN-0013-1954
Approaching Functions: Cabri Tools as Instruments of Semiotic Mediation
Falcade, Rossana; Laborde, Colette; Mariotti, Maria Alessandra
Educational Studies in Mathematics, v66 n3 p317-333 Nov 2007
Assuming that dynamic features of Dynamic Geometry Software may provide a basic representation of both variation and functional dependency, and taking the Vygotskian perspective of semiotic mediation, a teaching experiment was designed with the aim of introducing students to the idea of function. This paper focuses on the use of the Trace tool and its potentialities for constructing the meaning of function. In particular, starting from a dynamic approach aimed at grounding the meaning of function in the experience of covariation, the Trace tool can be used to introduce the twofold meaning of trajectory, at the same time global and pointwise, and leads students to grasp the notion of function.
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Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A