Setiawati, Sulis, Irsya Faradisa, Mudhofar Mudhofar, and Zainuddin Untu. “Penerapan Model Problem Based Learning (PBL) Untuk Meningkatkan Hasil Belajar Matematika”. Prosiding Seminar Nasional PPG Universitas Mulawarman 4 (December 30, 2023): 62–66. Accessed December 5, 2025. https://jurnal.fkip.unmul.ac.id/index.php/semnasppg/article/view/3052.