Variative Problems in Teaching Mathematics. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 15, n. 3, p. 1015–1022, 2022. DOI: 10.29020/nybg.ejpam.v15i3.4431. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/4431.. Acesso em: 6 may. 2024.