Student`s development in the learning process`
The systems genetic approach has been used for studying students` mental development. The ability development is considered in terms of intellectual operations acquistion. An aim of the study is to identify the components of the abilities which are consciously acquired by student in the learning process. The study desing is included the work to teach students the intellectual operations and use them at work with training materials, and the psychological testing of control and experimental student groups before and after training test to diagnose the level of intellectual development. The study was conducted with the teachers and students of primary and secondary school.