AYALA VALLADARES, C. M. .; CRUZ MONTERO, J. M. .; SALDARRIAGA MELGAR, A. . Playful activities in the learning of geometric notions in children of initial, Callao. Journal of Global Education Sciences, [S. l.], v. 1, n. 1, p. 22–30, 2019. Disponível em: https://journals.cincader.org/index.php/gesj/article/view/107. Acesso em: 20 nov. 2025.