Implementasi Model Problem Based Instruction terhadap Penguasaan Materi Hukum Newton dan Kecakapan Berpikir Kritis Siswa. Science and Physics Education Journal (SPEJ, [S. l.], v. 4, n. 2, p. 82–90, 2021. DOI: 10.31539/spej.v4i2.2422. Disponível em: https://journal.ipm2kpe.or.id/index.php/SPEJ/article/view/2422. Acesso em: 11 jan. 2026.