ALFI ANDRIANI; ELI TRISNOWATI. Integrating Problem-Based Learning and the Teaching at the Right Level Approach to Improve Students’ Collaboration Skills. International Journal of Education and Teaching Zone, [S. l.], v. 4, n. 3, p. 406–422, 2025. DOI: 10.57092/ijetz.v4i3.515. Disponível em: https://jurnal.yayasannurulyakin.sch.id/index.php/ijetz/article/view/515. Acesso em: 17 apr. 2026.