Implementasi Model Problem Based Instruction terhadap Penguasaan Materi Hukum Newton dan Kecakapan Berpikir Kritis Siswa. SPEJ [Internet]. 2021 Jun. 27 [cited 2026 Jan. 11];4(2):82-90. Available from: https://journal.ipm2kpe.or.id/index.php/SPEJ/article/view/2422