HARINI, E.; NURUL ISLAMIA , A.; KUSUMANINGRUM, B.; SINGGIH KUNCORO, K. Effectiveness of E-Worksheets on Problem-Solving Skills: A Study of Students’ Self-Directed Learning in the Topic of Ratios. International Journal of Mathematics and Mathematics Education, [S. l.], v. 1, n. 2, p. 150–162, 2023. DOI: 10.56855/ijmme.v1i02.333. Disponível em: https://journals.eduped.org/index.php/IJMME/article/view/333. Acesso em: 28 aug. 2025.