LUKMAN, Hamidah Suryani; AGUSTIANI, Nur; SETIANI, Ana. Gamification of Mathematics Teaching Materials: Its Validity, Practicality and Effectiveness. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 18, n. 20, p. pp. 4–22, 2023. DOI: 10.3991/ijet.v18i20.36189. Disponível em: https://online-journals.org/index.php/i-jet/article/view/36189. Acesso em: 17 aug. 2024.