OKTAVIANTINA, Ria. Efforts to Improve Student Learning Outcomes Using the Problem Based Learning Model in High School Students. KOGNITIF: Jurnal Ilmiah Pendidikan dan Keguruan, [S. l.], v. 1, n. 2, p. 26–33, 2024. Disponível em: https://journal.mgedukasia.or.id/index.php/kognitif/article/view/226. Acesso em: 27 jun. 2025.