EN
Geomorphology as science, with its investigative problems is particularly favourable to the formation of various intellectual skills, especially of logical reasoning. Investigative problems initiated by the teacher are usually a starting point for reasoning of a definite type. Two types of reasoning may occur: induction and deduction. Since geomorphology is a natural science the most frequently used reasoning is induction. A classical example of such reasoning is, for instance, the investigation of the causes of rock mechanical weathering, presented in a detailed elaboration. A form of induction is reasoning by way of analogy which occurs when we want to reproduce the genesis of older forms, created by different factors in climatic conditions different from those now prevailing in the investigated area. Reducing reasoning is also characteristic in geomorphology; it consists in concluding on facts, which cannot be observed from their observable consequences. An example of such reasoning is the reconstruction of the history of the Earth’s surface development. The formation of skill in logical reasoning is stimulated by the solution of investigative problems, particularly in the phase of formulating and theoretical verification of hypotheses. The value of the problem method in learning appears not only in the development of the logical apparatus of the student but also in the fact that it secures the systematization of knowledge, the consolidation and the evaluation of information and its transformation into skills through continuous use in changing activities.