FLETCHER, N. Preface. Journal of Mathematics Education at Teachers College, [S. l.], v. 5, n. 1, 2014. DOI: 10.7916/jmetc.v5i1.634. Disponível em: https://journals.library.columbia.edu/index.php/jmetc/article/view/634. Acesso em: 3 dec. 2023.