EFFECT OF MULTI-GRADE TEACHING ON STUDENT LEARNING AT PRIMARY LEVEL. International Journal of Social Sciences Bulletin, [S. l.], v. 4, n. 4, p. 290–298, 2026. Disponível em: https://ijssbulletin.com/index.php/IJSSB/article/view/2168.. Acesso em: 21 apr. 2026.