ARI-LAB - MODELS, ISSUES AND STRATEGIES IN THE DESIGN OF A MULTIPLE-TOOLS PROBLEM-SOLVING ENVIRONMENT

In this paper we refer to a project aimed at designing, implementing a nd evaluating a multiple-tools system to assist pupils in solving arit hmetic problems at the ages of 7-12. The theoretical framework and the a priori analysis that have inspired the design of the system are rep orted with regard to both cognitive and educational aspects. A descrip tion of the main features of the system is provided together with some findings from the first classroom tests of the system. The software e ngineering and ergonomic choices are justified by the analysis of the cognitive processes and educational questions involved in the task of building knowledge in arithmetic problem solving. From the software en gineering point of view, the system combines hypermedia and network co mmunication technologies with knowledge based systems; from the cognit ive point of view learning of the specific subject matter is the resul t of a synergy of interpretation, communication and action processes t hat are developed thanks to the mediation of the technology involved.