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]. 2022 Oct. 22 [cited 2025 Apr. 7];4(5):6802-10. Available from: https://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/7797