OLLIKAINEN, T. Successful teaching using mathematical visual aids?. LUMAT: International Journal on Math, Science and Technology Education, [S. l.], v. 2, n. 1, p. 3–4, 2014. DOI: 10.31129/lumat.v2i1.1077. Disponível em: https://journals.helsinki.fi/lumat/article/view/1077. Acesso em: 19 may. 2024.