“PENGARUH MODEL PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR SISWA PADA MATA PELAJARAN IPAS DI KELAS IV SD NEGERI 065012 SIMPANG SELAYANG, MEDAN TUNTUNGAN”. Universum: Journal of Holistic and Multidisciplinary Perspectives 1, no. 1 (July 30, 2026): 16–24. Accessed November 5, 2026. https://publicpublication.biz.id/ojs/index.php/universum/article/view/5.