Efforts to Improve Student Learning Outcomes Through the Application of Problem Based Learning (PBL) Learning Model on the Subject of Chemical Bonds Class X SMAN 1 Kaledupa. Kainawa: Jurnal Pembangunan dan Budaya, [S. l.], v. 7, n. 2, 2026. DOI: 10.46891/. Disponível em: https://jurnal.kainawa.id/index.php/knw/article/view/89.. Acesso em: 8 feb. 2026.