MEASURING STUDENTS’ SELF DETERMINATION IN MATHEMATICS LEARNING: AN INSTRUMENT VALIDATION STUDY. ALGORITMA: Journal of Mathematics Education, [S. l.], v. 7, n. 2, p. 100–109, 2025. DOI: 10.15408/ajme.v7i2.48714. Disponível em: https://journal.uinjkt.ac.id/algoritma/article/view/48714. Acesso em: 18 feb. 2026.