Education is the main tool of social development, a process of systematic teaching to transfer some knowledge and skills. The choice of teaching methods influences the level of information perception by students. The article deals with the influence of studying environment on mental development level and students' interest. For cognitive development, diagnostic and academic interest to subjects testing and questioning of 736 primary school children was conducted. The respondents were divided into three groups depending on the technologies (systems) of teaching Mathematics and Russian language. The study shows that while teaching Russian using IDU technology more positive dynamics of educational effects is revealed.