Pamungkas, Yustika Widya. “Analisis Pembelajaran Matematika Melalui Model Problem Based Learning (PBL) Pada Siswa Kelas IV MI Muhammadiyah Ngadirejan”. Jurnal PGSD 10, no. 1 (June 22, 2024). Accessed July 3, 2024. https://e-journal.umc.ac.id/index.php/JPS/article/view/5766.