VOGELI, B. R.; SMITH, J. P.; WALKER, E. Journal of Mathematics Education at Teachers College, [S. l.], v. 1, n. 1, 2010. DOI: 10.7916/jmetc.v1i1.667. Disponível em: https://journals.library.columbia.edu/index.php/jmetc/article/view/667. Acesso em: 15 jul. 2024.