HAYA, Padia; SIREGAR, Syarifah Nur; ROZA, Yenita. Implementing problem-based learning to improve students’ learning outcomes: A classroom action research. Jurnal Absis: Jurnal Pendidikan Matematika dan Matematika, [S. l.], v. 8, n. 2, p. 400–408, 2025. DOI: 10.30606/absis.v8i2.3101. Disponível em: https://journal.upp.ac.id/index.php/absis/article/view/3101. Acesso em: 15 jun. 2026.