Sianturi, Yulinda, Reviva Safitri, Jefri Faizal, dan Nia Devi Anggraini. “PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR IPAS KELAS IV SD NEGERI 158501 SIBULUAN”. Jurnal Ilmiah Pendidikan Dasar (JIPDAS) 5, no. 2 (Mei 30, 2025): 1888–1893. Diakses Desember 7, 2025. https://jurnal.spada.ipts.ac.id/index.php/JIPDAS/article/view/2105.