Simangunsong, I. T.; Uskenat, K.; Damanik, D. P.; Simangunsong, I. P.; Purba, A. A. Improvement of High School Students’ Physics Problem Solving Skills Through Problem Based Learning Assisted by LKPD (Student Worksheets). Jurnal. Kependidikan. Fisika 2024, 12, 275-286.