I. Introduction
Quality of education has been a subject of research for many decades, and research is trying to find effective methods of training and learning to improve not only knowledge acquisition, but also motivation of learners to learn and their satisfaction with the learning process. Learner requirements are still increasing almost without regard to the level of study (primary, secondary, tertiary schools and lifelong learning). However, efficient learning methods depend on the level of study and different learning approaches are suitable for e.g. primary schools and different for tertiary level students.