Widyaningrum T, Kurniastuti I, Sutopo AYE. Problem Based Learning Dapat Meningkatkan Keaktifan dan Hasil Belajar Siswa Kelas IV SD Kanisius Kadirojo. jptam [Internet]. 2023 Aug. 23 [cited 2025 Jul. 1];7(2):17771-7. Available from: https://jptam.org/index.php/jptam/article/view/9181