46. Peningkatan Hasil Belajar Melalui Model Problem Based Learning Mata Pelajaran IPAS Berbantu Video Pembelajaran kelas 4 SDN 2 Purwosari. psnppg. 2023;1(1):412-420. Accessed August 11, 2026. https://conference.upgris.ac.id/index.php/psnppg/article/view/3941