6+7=18. Foro de Educacion, [S. l.], v. 2, n. 4, p. 104–105, 2024. DOI: 10.14201/17kavc54. Disponível em: https://forodeeducacion.com/ojs/index.php/fde/article/view/506. Acesso em: 14 oct. 2026.