UYEN, B. P. .; TONG, D. H. .; HAN, N. N. . Enhancing Problem-Solving Skills of 8th-Grade Students in Learning the First-Degree Equations in One Unknown. International Journal of Education and Practice, [S. l.], v. 9, n. 3, p. 568–587, 2021. DOI: 10.18488/journal.61.2021.93.568.587. Disponível em: http://archive.conscientiabeam.com/index.php/61/article/view/726. Acesso em: 2 may. 2024.