Aini SN, Mustika D. Peningkatan Keaktifan Belajar IPAS melalui Problem Based Learning pada Siswa Kelas V. basicedu [Internet]. 2026 Jun. 23 [cited 2026 Jun. 24];10(3):1214-27. Available from: https://jbasic.org/index.php/basicedu/article/view/12454