SZEREDI, Éva; TÖRÖK, Judit. Teaching polygons in the secondary school: a four country comparative study. Teaching Mathematics and Computer Science, [S. l.], v. 5, n. 1, p. 29–65, 2007. DOI: 10.5485/TMCS.2007.0133. Disponível em: https://ojs.lib.unideb.hu/tmcs/article/view/14786. Acesso em: 20 oct. 2024.