The Effect of Problem Based Learning Model on Students’ Critical Thinking Skills in Financial Services Authority Material. International Journal of Innovation in Education and Social Studies , [S. l.], v. 1, n. 1, p. 22–32, 2026. DOI: 10.68491/ijiess.v1i1.6. Disponível em: https://journal.baihaqiinsanmadani.or.id/index.php/IJESS/article/view/6. Acesso em: 11 oct. 2026.