For technical field a lot of issues which are necessary to understand the subject is adjustable in the sphere of abstraction. For people, who do not have adequate knowledge, imagining even a simple element/assembly based on its orthogonal projections is not a significant problem. Such problems are well known and are the main goal of our research. The objectives of the project InterEdu was mainly to increase the quality of education. The ability to apply the techniques of passive and active 3D is assumed by default for the future engineer applying concurrent engineering methods. Aiding the teaching process with the use of a system which allows presentations of knowledge and data in a 3D virtual reality environment should result in a more efficient way to browse, evaluate, interpret and hence better understand the presented contents. The application of these techniques in a variety of courses not only makes it easy to explore the content of these courses but also allows students to become familiar with the use of sophisticated data visualization and to cooperate in various fields. The aim of the validation studies was to evaluate the operation and usefulness of the system in the context of its use in order to facilitate learning. The evaluation has been subjected to issues how the visualization of knowledge influences the effectiveness of the process of teaching. The students, taking part in the evaluation process, indicated the usefulness of this system in the teaching process. The InterEdu system improves the process of education and effectively aids the students who have difficulties in the content interpretation, especially at the earlier years of study.