НІКІТІНА, О. О. Modification of the activity approach to the formation of learning activity in junior schoolchildren at the beginning of the XX-XXI century. Educational Dimension, Kryvyi Rih, Ukraine, v. 36, p. 474–481, 2012. DOI: 10.31812/educdim.v36i0.3464. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/3464. Acesso em: 22 jul. 2024.