ROBITAILLE , David F.; SHERRILL, James M. The Teaching of Mathematics in British Columbia. Canadian Journal of Education/Revue canadienne de l’éducation, [S. l.], v. 5, n. 1, p. 14–26, 1980. Disponível em: https://cje.journals.publicknowledgeproject.org/cje/index.php/cje-rce/article/view/8061. Acesso em: 19 sep. 2026.