BERNOTAS , V. On the development of the investigation principle in didactics . Psichologija, [S. l.], v. 10, p. 79–90, 1969. DOI: 10.15388/Psichol.1969.10.9236. Disponível em: https://journals.vu.lt./psichologija/article/view/9236. Acesso em: 27 apr. 2025.