PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING BERBANTUAN POP-UP BOOK TERHADAP HASIL BELAJAR IPAS KELAS V SDN 106162 MEDAN ESTATE. JISD. 2024;1(5). Diakses Maret 20, 2026. https://jurnal.unimed.ac.id/2012/index.php/jisd/article/view/63018