Pengaruh Model Problem Based Learning Terhadap Kemampuan Penalaran Matematis Mahasiswa Universitas HKBP Nommensen Pematangsiantar: -. pendipa. jurnal. pendik. sains [Internet]. 2024 Mar. 12 [cited 2025 Jul. 1];8(1):65-9. Available from: https://ejournal.unib.ac.id/pendipa/article/view/33343