Vztah úrovně didaktické vybavenosti a míry obtížnosti textu současných učebnic

The present paper presents the results of the analysis of secondary school geography textbooks. The choice of the research methods had been determined by the applicability of the results in practice. Two main methodological procedures were applied: The method of measurement of the didactic potentiality and the measurement of the text difficulty level by means of the Complex text difficulty rate. At the beginning of the research, a hypothesis was set supposing a connection between the level of didactic potentiality and adequacy of the text difficulty level. The hypothesis validity was confirmed by statistical evaluation of the ascertained facts. A possible contribution to the research is expressed in the conclusion of this thematic contribution, namely from the point of view of its contents, methodology and above all practice. It indicates also the further perspectives of the research, particularly in the situation when, at present, the evaluation of textbooks as a part of the pedagogical research is still a side issue in this country.