BUTAR, Aminsyah Butar. Penerapan Model Pembelajaran Problem Based Learning Untuk Meningkatkan Hasil Belajar Peserta Didik Pada Pelajaran Matematika Di SDS It Deli Insani. Innovative: Journal Of Social Science Research, [S. l.], v. 2, n. 2, p. 347–355, 2022. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/6911. Acesso em: 19 apr. 2026.