FIRMANSYAH, Hanif. Model Problem Based Learning Berbantu Media Kotak Sifat Cahaya untuk Meningkatkan Hasil Belajar IPAS Kelas Va. Prosiding Seminar Nasional Pendidikan Profesi Guru, [S. l.], v. 1, n. 2, p. 2534–2539, 2023. Disponível em: https://conference.upgris.ac.id/index.php/psnppg/article/view/5410. Acesso em: 5 dec. 2025.