HUTABARAT, Mardayanti. Efforts to Improve Students’ Learning Outcomes by Using the Problem Based Learning Model in Islamic Education and Character Subjects at SD Negeri 084085 Sibolga. Jurnal Pendidikan Profesi Guru, [S. l.], v. 1, n. 2, p. 60–67, 2023. DOI: 10.22373/jppg.v1i2.6702. Disponível em: https://journal.ar-raniry.ac.id/index.php/ppg/article/view/6702. Acesso em: 13 sep. 2025.