The effectiveness of Barman model in acquiring the historical concepts among fourth-grade literary students. Journal Of Educational and Psychological Researches, [S. l.], v. 15, n. 58, p. 547–571, 2018. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/133. Acesso em: 5 may. 2025.