GRAZIANI, I.; BABINI, S. Analysis of errors on area and perimeter in some Invalsi questions. EDiMaST: Experiences of Teaching with Mathematics, Sciences and Technology, [S. l.], v. 4, p. 609–622, 2019. Disponível em: https://www.edimast.it/index.php/edimast/article/view/62. Acesso em: 28 nov. 2021.