Astuti, Ayu Puji, Agnita Siska Pramasdyahsari, and Bayu Iskandar. “335. Peningkatan Pemahaman Konsep Matematika Pada Peserta Didik Kelas 1 SD 1 Dersalam Melalui Model Pembelajaran Problem Based Learning”. Prosiding Seminar Nasional Pendidikan Profesi Guru 1, no. 1 (July 3, 2023): 2989–2996. Accessed April 28, 2025. https://conference.upgris.ac.id/index.php/psnppg/article/view/4263.