KASHADA, A.; LI, H.; SU, C. Adoption of Flipped Classrooms in K-12 Education in Developing Countries: Challenges and Obstacles. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 12, n. 10, p. pp. 147–157, 2017. DOI: 10.3991/ijet.v12i10.7308. Disponível em: https://online-journals.org/index.php/i-jet/article/view/7308. Acesso em: 17 jan. 2022.