Manullang, Mellyana, Andriono Manalu, and Sudirman Togu P. Lumbangaol. 2024. “Pengaruh Model Pembelajaran Problem Based Learning Terhadap Kemampuan Pemecahan Masalah Fisika Siswa SMA Negeri 1 Rantau Utara”. Innovative: Journal Of Social Science Research 4 (1):5546-58. https://doi.org/10.31004/innovative.v4i1.8504.