Arithmetic Microworls in a Hypermedia System for Problem Solving

In this paper we refer to the ARI-LAB system, an educational computer-based system which combines hypermedia and communication technologies in order to allow the user to build her/his own solution to a given arithmetic problem by navigating through different integrated environments. In particular, we focus to the arithmetic microworlds environment which is included in the system. The discussion on this environment will be carried out taking into account both pedagogical and technical aspects.