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…

Describes some topics of French research: relationships between teaching and learning, choices and constraints of the didactic system, role of the computer, and forms of the functioning knowledge. (YP)