The development of a multimedia visual model can be an informative process that requires and encourages a large number of abilities. This paper focuses on three dimensions of the modelling process, all connected with certain abilities. Firstly, an informative model is a simplified image of a real system. In this respect modellers are required to observe reality well, to recognise and describe structures. Secondly, the model can be regarded as a medium through which certain mental constructs and contents can be imparted to recipients (communicative aspect). Finally, a multimedia model (especially if it is to be attractive) is a complex, technical product whose implementation demands the use of methods of information technology, for example object-oriented modelling. Using the example of the object-oriented modelling of a waterworks with the help of Flash 5, the paper discusses under what conditions the development of animation in IT teaching can help modelling abilities.