PRATIWI, Dwi; TAMBUNAN, Lois Oinike; MARBUN, Yanty Maria. Peningkatan Kemampuan Pemecahan Masalah Matematis Melalui Model Pembelajaran Problem Based Learning pada Siswa SMP Negeri 2 Pematang Siantar. Innovative: Journal Of Social Science Research, [S. l.], v. 4, n. 1, p. 3533–3546, 2024. DOI: 10.31004/innovative.v4i1.8298. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/8298. Acesso em: 19 may. 2026.