Influence Application of Learning Models Problem Based Learning (PBL) Against Results Study Mathematics Student Class VII SMP Negeri 1 Pangkur. International Journal of Sustainability in Research (IJSR), [S. l.], v. 1, n. 3, p. 151–160, 2024. Disponível em: https://penerbitjurnalinternasional.com/index.php/ijsr/article/view/731.. Acesso em: 11 feb. 2026.