Mariyana M, Syahri W, Haryant H. Based E-LKPD development based problem based learning to improve students’ creative thinking skills on acid-base material. J.Pendidik.Kim [Internet]. 2023 Aug. 31 [cited 2025 Jul. 6];15(2):163-9. Available from: https://jurnal.unimed.ac.id/2012/index.php/jpk/article/view/48264