The effect of using an educational bag In acquiring and retaining geographical concepts For middle school students. Journal of the College of Basic Education, [S. l.], v. 18, n. 73, p. 475–510, 2023. DOI: 10.35950/cbej.v18i73.9171. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/9171.. Acesso em: 10 may. 2025.