Sari MK, Sulianto J, Rubiatun S. 215. Penerapan Model Pembelajaran Problem Based Learning Untuk Meningkatkan Hasil Belajar Matematika Kelas Iv SDN Sitirejo. psnppg [Internet]. 2023 Jul. 3 [cited 2025 Dec. 5];1(1):1922-30. Available from: https://conference.upgris.ac.id/index.php/psnppg/article/view/4244