DJAFAR, S.; ISMAIL, S.; USMAN, K. The PBL Model in Statistics to Improve Eighth-Grade Students’ Mathematical Problem-Solving Skills . Jurnal Pendidikan Matematika Universitas Lampung, [S. l.], v. 14, n. 2, p. 168–176, 2026. DOI: 10.23960/mtk/v14i2.pp168-176. Disponível em: https://jurnal.pbs.fkip.unila.ac.id/index.php/jpm/article/view/1905. Acesso em: 12 jul. 2026.