Sijabat A, Sianipar HF, Siahaan TM, Sijabat OP. The Effect of Problem Solving Learning Models on Students’ Understanding of Physics Concepts. J. Prisma. Sains [Internet]. 2021 Jun. 30 [cited 2025 Aug. 16];9(1):52-6. Available from: https://e-journal3.undikma.ac.id/index.php/prismasains/article/view/3858