“Implementasi Model Problem Based Learning Untuk Meningkatkan Kemampuan Penalaran Matematis Siswa Kelas IV SD Negeri 030306 Barisan Nauli”. Jurnal Intelek Insan Cendikia 3, no. 04 (April 12, 2026): 2350–2359. Accessed June 7, 2026. https://jicnusantara.com/index.php/jiic/article/view/6898.