NABABAN, Elnita; MARBUN, Yanty Maria; SIHOMBING, Belsasar. Efektivitas Model Pembelajaran Problem Based Learning (PBL) Terhadap Pemahaman Konsep dan Hasil Belajar Pada Materi Persamaan Garis Lurus Kelas VIII di Smp Negeri 2 Tapian Dolok. Innovative: Journal Of Social Science Research, [S. l.], v. 4, n. 1, p. 2754–2766, 2024. DOI: 10.31004/innovative.v4i1.8213. Disponível em: http://j-innovative.org/index.php/Innovative/article/view/8213. Acesso em: 1 aug. 2026.