The paper deals with innovative teaching methods at universities. The result of this effort is the interactive P&E method, whose main idea is the interactive work with students while solving problem tasks. The main aim of the given method is to change the students' position, by means of experiment analyses and qualitative tasks, from a passive to an active one. The aim of our continual research is the comparison of the study results reached in the teaching process using interactive methods with the study results reached in traditional teaching process. During the study the students took the pre-test and the post-test. From the results of the didactic test is possible to conclude that the use of interactive methods improves the students' results in these tests. The worst results are achieved, in the long term, in the tasks aimed at the specific and non-specific transfer.