MAGAYON, M. V. C.; TAN, E. B. Grade 7 mathematics textbooks’ differentiation in the Philippines: Illusion or reality?. International Journal of Learning and Teaching, [S. l.], v. 9, n. 3, p. 332–348, 2017. Disponível em: https://un-pub.eu/ojs/index.php/ijlt/article/view/2378. Acesso em: 29 apr. 2024.