NINGSIH, Eva Pebri; RISMEN, Sefna; HARYONO, Yulia. Efektivitas Problem Based Learning (PBL) dalam Meningkatkan Kemampuan Pemecahan Masalah Matematika Siswa . Journal of Education Research, [S. l.], v. 6, n. 3, p. 670–676, 2025. DOI: 10.37985/jer.v6i3.1635. Disponível em: https://jer.or.id/index.php/jer/article/view/1635. Acesso em: 16 aug. 2025.