BATUBARA, S.; PANJAITAN, M. B.; PASARIBU, E. The Influence of Problem Based Learning Model on Students’ Critical Thinking Skills in Natural and Social Sciences Subject of Class V UPTD SD Negeri 122379 Pematangsiantar. Jurnal Riset Ilmu Pendidikan, [S. l.], v. 5, n. 3, p. 670–676, 2025. DOI: 10.56495/jrip.v5i3.1283. Disponível em: https://jurnal.larisma.or.id/index.php/JRIP/article/view/1283. Acesso em: 15 oct. 2025.