QR code based module development to improve students’ learning interest in quadratifical equations in class ix mts nurul huda bercak asri cermee bondowoso: pengembangan modul berbasis qr code. Jurnal Mercumatika : Jurnal Penelitian Matematika dan Pendidikan Matematika, [S. l.], v. 8, n. 2, 2025. DOI: 10.26486/jm.v8i2.4272. Disponível em: https://ejurnal.mercubuana-yogya.ac.id/index.php/mercumatika/article/view/4272. Acesso em: 30 jun. 2026.