Kumolontang, Deddy. “Penerapan Model Problem Based Learning Untuk Meningkatkan Hasil Belajar IPA Kelas IV SD”. Jurnal Ilmiah Wahana Pendidikan 8, no. 22 (November 15, 2022). Accessed September 2, 2026. https://www.jurnal.peneliti.net/index.php/JIWP/article/view/2882.