MAGAYON, MA. VICTORIA CASTILLO, and Emily B. Tan. “Grade 7 Mathematics textbooks’ Differentiation in the Philippines: Illusion or Reality?”. International Journal of Learning and Teaching 9, no. 3 (September 5, 2017): 332–348. Accessed November 23, 2024. https://un-pub.eu/ojs/index.php/ijlt/article/view/2378.