FORNIAWAN, A. . Efektivitas Model Problem Based Learning terhadap Hasil Belajar IPA Materi Gelombang dan Bunyi Siswa Kelas IV di MI Darul Ulum. Jurnal Pendidikan dan Pembelajaran, [S. l.], v. 4, n. 01, p. 212–225, 2025. Disponível em: https://ojs.smkmerahputih.com/index.php/juperan/article/view/773. Acesso em: 30 agu. 2025.