MASTNAK, Adrijana. Using Modern Learning Approaches in Teaching Basic Didactics of Mathematics in the Mahara E-Portfolio Environment. Journal of Elementary Education, [S. l.], v. 15, n. 4, p. 511–531, 2022. DOI: 10.18690/rei.15.4.511-531.2022. Disponível em: https://journals.um.si/index.php/education/article/view/2550. Acesso em: 5 dec. 2025.