Reports data from a longitudinal study of 12-year-old students' interpretations of geometrical objects and relationships when using dynamic geometry software. Focuses on the progressive mathematization of the students' sense of the software, examining their interpretations, and using the explanations that students give to the geometrical…

Examines possibilities for learning offered by a piece of software, Fonctuse, likely to encourage the linking of algebraic and graphical representations of functions. Studied the influence of prior algebraic knowledge on the cognitive processes and constructions of knowledge at play in this environment. (Author/MKR)

Studies of knowledge constructing often focus on the analysis of a single episode, without considering enough the history of the learners, or the future learners' trajectories with regard to the concepts learned. This paper presents an example of knowledge constructing within the context of peer learning. We show how the design of the task and the…