Малихіна, С.В. 2012. Psycho-pedagogical analys is of the formation of concepts learning and cognitive activity of students as the basis for the didactic intensification (retrospective review: XVII – beginning of XX century). Pedagogy of Higher and Secondary Education. 36, (Sep. 2012), 652–660. DOI:https://doi.org/10.31812/educdim.v36i0.3498.