RUSTAM HASIBUAN. Implementation of Problem Based Learning Model to Improve Student Learning Outcomes State Elementary School 0703 Hutaraja Tinggi, Hutaraja Tinggi District, Padang Lawas Regency. Indonesian Journal of Islamic Education, [S. l.], v. 1, n. 1, p. 189–194, 2025. Disponível em: https://journal.maalahliyah.sch.id/index.php/ijie/article/view/194. Acesso em: 9 feb. 2026.