MUNIR, M.; LISNAWATI; AFRIANI, A. Constructivist approach through portfolio assessment to enhance mathematical conceptual understanding: A case study among university students. Beta: Jurnal Tadris Matematika, [S. l.], v. 18, n. 2, p. 143–159, 2025. Disponível em: http://jurnalbeta.ac.id/index.php/betaJTM/article/view/717. Acesso em: 16 feb. 2026.