Implementasi Model Problem Based Learning untuk Meningkatkan Kemampuan Penalaran Matematis Siswa Kelas IV SD Negeri 030306 Barisan Nauli. Jurnal Intelek Insan Cendikia, [S. l.], v. 3, n. 04, p. 2350–2359, 2026. Disponível em: https://jicnusantara.com/index.php/jiic/article/view/6898. Acesso em: 7 jun. 2026.