TARIGAN, L. R. B.; MANGARATUA MARIANUS SIMANJORANG. Improving Student Mathematics Learning Outcomes Through the Problem Based Learning (PBL) Learning Model on Linear Program Material in Class XI SMA Negeri 1 Tigabinanga. Formosa Journal of Multidisciplinary Research, [S. l.], v. 2, n. 1, p. 163–176, 2023. DOI: 10.55927/fjmr.v2i1.2694. Disponível em: https://journal.formosapublisher.org/index.php/fjmr/article/view/2694. Acesso em: 15 may. 2026.