MEXRIDDINOVNA, R. N. The Modern Approaches to Teaching Portions and Fractions in Primary Schools Mathematics. European Journal of Life Safety and Stability (2660-9630), [S. l.], v. 12, p. 196-202, 2021. Disponível em: http://ejlss.indexedresearch.org/index.php/ejlss/article/view/289. Acesso em: 5 oct. 2025.