SIAGIAN, R. P. .; SIAGIAN, A. F. .; SIJABAT, D. . The Influence of the Problem Based Learning (PBL) Learning Model on the Critical Thinking Skills of Grade V . Jurnal Ilmu Sosial dan Humaniora , [S. l.], v. 4, n. 1, p. 347–358, 2026. DOI: 10.58540/isihumor.v4i1.1491. Disponível em: https://putrapublisher.org/ojs/index.php/isihumor/article/view/1491. Acesso em: 18 apr. 2026.