Situmeang AZ, Ginting E. Difference Model Problem Based Learning (PBL) and Discovery Learning (Dl) on Results Study and Motivation Study Students At Bonding Materials Chemistry in Senior High School. Jurnal, Teknologi, Pendidikan [Internet]. 2024 Apr. 28 [cited 2025 Aug. 16];9(2):293-300. Available from: https://e-journal3.undikma.ac.id/index.php/jtp/article/view/11202