The Effectiveness of Project Based Learning with Performance Assessment on Mathematical Reasoning Ability in View of Self Confidence Students at SMA Negeri 7 Semarang. Jurnal Mercumatika : Jurnal Penelitian Matematika dan Pendidikan Matematika, [S. l.], v. 7, n. 2, 2023. DOI: 10.26486/jm.v7i2.3267. Disponível em: https://ejurnal.mercubuana-yogya.ac.id/index.php/mercumatika/article/view/3267. Acesso em: 30 jun. 2026.