The blackboard and its educational use . Journal of the College of Basic Education, [S. l.], v. 17, n. 69, p. 193–209, 2022. DOI: 10.35950/cbej.vi.8289. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/8289.. Acesso em: 18 jul. 2024.