“…Above all we demand to arrange the lessons around larger project sequences. We propose to follow the process of modeling and simulation, using adapted methods of modern software engineering (Broy, 1995;Broy, Facchi, Grosu, Hettler, Hussman, Nazareth, Regensburger, Slotosch and Stoelen, 1993;Booch, 1994;Jacobson, Christerson, Jonsson and Overgard, 1991;Rumbaugh, Blaha, Premerlani, Eddy and Lorensen, 1991): 1. The teacher selects a problem to be solved or a real life system to be simulated.…”