Erosion processes cause serious ecologic and economic problems because of their negative consequences in terms of soil and water deterioration as well as for the environment as a whole. Water erosion implicates that the fine soil particles, nutrients and organic components are washed out. This thesis adresses the size of water erosion and erosion control measures in the region Huánuco (Carpsih) in Peru. Size of erosion was determined using an universal equation - Revised Universal Soil Loss Equation (RUSLE). The main results of the work is the determination of the extent of soil erosion in the are of interest, its displeving in the map bases and the suggestion of soil protection in the most endangered areas.

1 Abstract This dissertation concludes teaching experience of several years which was dedicated to examining the possibilities of role playing in history teaching. The theoretical part offers an excursion into the area of didactic literature and observes the importance which is attributed to role playing by general teaching methodology, teaching methodology of history, personal and social education as well as drama education. The author focuses especially on recent examples of role playing in history teaching, she comments and interlinks them. The rules and principles for practical usage of role playing in history teaching are provided at the end of the theoretical part. The empirical part describes the progress of two-phase action research realized during the years 2007-2011 at grammar school with four-year study programme. At the beginning of the empirical probe there were two general questions: Can the role playing in history teaching help the development of students' personality? Can the role playing in history teaching help to fulfil the educational goals of history teaching? These were gradually more specified and modified according to the progress of action research. The main subject of interest was observing the students' development in the area of working in groups of different sizes, role playing...

The Dissertation work is focused on finding the effectivity of the inquiry-based science education of Chemistry subject at elementary schools and grammar schools concerning the topic of Chemistry process. The theoretical part proves the knowledge of inquiry-based science education (IBSE) in the 21 century, specifies the level of research, learning cycle 5E, its positives and negatives. The practical part is created by the files of methodology, particularly the methodological worksheets for teachers and worksheets for pupils as well, regarding the topic Substance Transformation for the elementary schools and for the grammar schools the topic Chemical Reactions and Chemical Equations. In the research part, there are shown the results of paedagogical research aiming at verifying the influence IBSE on to develop the higher mind operations according to Bloom taxonomy, to develop the scientific skills, as well as the survey of pupils' attitudes to this particular educational teaching process. The results obtained from the IBSE implementation and its verification performed by the cognitive tests and further by statistical evaluation, have confirmed the validity of the set hypotheses - the level of pupils' knowledge and skills has been increased, especially at weaker pupils in both degree of schools. By...