Analisis Keaktifan Siswa dalam Pembelajaran IPAS Melalui Problem Based Learning (PBL) di Kelas IV SD Negeri 091339 Dolog Huluan. JHMP. 2026;1(1):7-15. Accessed November 4, 2026. https://publicpublication.biz.id/ojs/index.php/universum/article/view/2