The effect of Posner model on the acquisition of historical concepts among students of the second intermediate grade. Al-Adab Journal, [S. l.], v. 2, n. 136, p. 233–252, 2021. DOI: 10.31973/aj.v1i136.1026. Disponível em: https://aladabj.uobaghdad.edu.iq/index.php/aladabjournal/article/view/1026.. Acesso em: 11 may. 2024.