Simanjuntak RF, Tambunan LO, Sauduran GN. Pengaruh Model Pembelajaran Problem Based Learning (PBL) terhadap Kemampuan Pemahaman Konsep Matematis Siswa di SMP Negeri 2 Tapian Dolok. JPDK [Internet]. 2022Oct.22 [cited 2024Nov.22];4(5):6802-10. Available from: http://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/7797