Rohim R, Haridha Zain A, Umamah C, Tachwifa I, Widiastutie A. Implementation of the Problem-Based Learning (PBL) Model to Improve Conceptual Understanding and Student Activeness in Grade X. J. Penelit. Tindak. Kls. [Internet]. 2025 Oct. 31 [cited 2026 Aug. 18];3(2):48-57. Available from: https://didaktika.lombokinstitute.com/index.php/JPTK/article/view/126