AŽUBALIS, Algirdas. Training of skills of independent activities of primary school pupil’s during lessons of mathematics in Lithuania (6–9th decades of the 20th century). Lietuvos matematikos rinkinys, [S. l.], v. 44, n. spec., p. 405–409, 2004. DOI: 10.15388/LMR.2004.31961. Disponível em: https://www.journals.vu.lt/LMR/article/view/31961.. Acesso em: 18 jul. 2024.