OKTARI, N.; FAUDIAH, N. F. .; NINGSIH, Y. L. Penerapan Model Problem Based Learning dalam Meningkatkan Kemampuan Pemahaman Konsep Matematika Materi Pecahan di SD. PPSDP Undergraduate Journal of Educational Sciences, [S. l.], v. 2, n. 2, p. 606–612, 2025. DOI: 10.59175/pujes.v2i2.483. Disponível em: https://ejournal.ppsdp.org/pujes/article/view/483. Acesso em: 3 jul. 2026.