Gaol, Gabe Pangeran Lumban, Muktar Bahruddin Panjaitan, and Janwar Tambunan. 2025. “Pengaruh Model Pembelajaran Problem Based Learning Terhadap Hasil Belajar IPAS Siswa Kelas IV SD Negeri 091273 Karang Bangun Pematangsiantar ”. Innovative: Journal Of Social Science Research 5 (4):11160-74. https://doi.org/10.31004/innovative.v5i4.21168.