I. Introduction
In the last decade there have been many researchers who have, in their studies, warned that computer assisted or ICT assisted teaching should provide educational support wherever its use is feasible or reasonable. Chang and his co-workers have, in their article, made an overview about previous researches, which have confirmed the effectiveness of instruction supported by computer simulations [2]. They have also, in their own research, confirmed the successfulness of this teaching approach with emphasis on the usage of computer simulations. Wieman and his co-workers have explored the effectiveness of selected computer simulations in lessons [7]. They have emphasized that interactive simulations are new and very powerful tools in the educational process.