MOHAMMAD MAHMOUD AL.OMAR, H. The Effectiveness of School Activity Classes in Music Education for Seventh-Grade Students. Jordan Journal of the Arts, [S. l.], v. 19, n. 2, p. 187–199, 2026. Disponível em: https://jja.yu.edu.jo/index.php/jja/article/view/630. Acesso em: 21 jul. 2026.