HAJRIANI S; ELPISAH ELPISAH; NURDIN NURDIN. The Effect of Problem-Based Learning (PBL) on Critical Thinking and Social Science Concept Mastery in SMPN 4 Makassar . International Journal of Social Science and Humanity, [S. l.], v. 2, n. 1, p. 70–85, 2025. DOI: 10.62951/ijss.v2i1.249. Disponível em: https://international.appisi.or.id/index.php/IJSS/article/view/249. Acesso em: 28 feb. 2026.