“PENINGKATAN HASIL BELAJAR IPAS MATERI PERUBAHAN ENERGI MELALUI MODEL PEMBELAJARAN PROBLEM BASED LEARNING PADA KELAS IV SD NEGERI KUNCIRAN 9”, Sindoro, vol. 18, no. 3, pp. 1071–1080, Jan. 2026, Accessed: Oct. 02, 2026. [Online]. Available: https://cibjournal.com/index.php/sindoro/article/view/5980