Aprilia, Ulfiatul Inka, et al. “213. Peningkatan Hasil Belajar Menggunakan Model Problem Based Learning Pada Mata Pelajaran Matematika Di Sekolah Dasar”. Prosiding Seminar Nasional Pendidikan Profesi Guru, vol. 1, no. 1, July 2023, pp. 1907-15, https://conference.upgris.ac.id/index.php/psnppg/article/view/4242.