PASCUA, J. IMPROVING THE COMPETENCE OF GRADE 9 STUDENTS ON THE CONCEPT OF DEMAND THROUGH SIM-BAHAN. International Journal of Arts, Sciences and Education, [S. l.], v. 5, n. 2, p. 1–13, 2024. Disponível em: https://ijase.org/index.php/ijase/article/view/321. Acesso em: 17 apr. 2026.