Teaching the development of mathematical symbols to preschool children. Journal of Namibian Studies : History Politics Culture, [S. l.], v. 34, p. 123–134, 2023. DOI: 10.59670/jns.v34i.993. Disponível em: https://namibian-studies.com/index.php/JNS/article/view/993. Acesso em: 1 nov. 2025.