PENERAPAN MODEL PROBLEM BASED LEARNING BERBANTUAN MEDIA POHON PINTAR UNTUK MENINGKATKAN HASIL BELAJAR IPAS KELAS V SD. psnppg. 2023;1(2):3422-3430. Accessed July 28, 2026. https://conference.upgris.ac.id/index.php/psnppg/article/view/5680