SIRAIT, Khorint Meilani; THESALONIKA, Emelda; SIJABAT, Desi. The Effect of Project Based Learning (PJBL) Model Based on Marharoan Bolon in Science Subjects on Students’ Learning Outcomes in Grade V UPTD SD Negeri 122379 Pematangsiantar. MSJ : Majority Science Journal, [S. l.], v. 3, n. 2, p. 8–17, 2025. DOI: 10.61942/msj.v3i2.326. Disponível em: https://jurnalhafasy.com/index.php/msj/article/view/326. Acesso em: 9 may. 2026.