Core Geometrical Knowledge for using the Modelling Power of Geometry with Cabri-Geometry.

Euclidean geometry has disappeared from some curricula at secondary school and university. This situation may change in the next few years. The power of geometry as a modelling tool, which allows a global representation of a system, is deeply reinforced by the availability of software packages of dynamic geometry such as like Cabri-géomètre. Such open-ended environments offer a large range of geometrical tools for creating dynamic geometrical figures which can be fully animated. [ABSTRACT FROM AUTHOR]