The Effect of PDEODE Strategy on the Acquisition of Historical Concepts of First Class of Intermediate Students . Journal Of Educational and Psychological Researches, [S. l.], v. 15, n. 59, p. 628–648, 2018. Disponível em: https://www.jperc.uobaghdad.edu.iq/index.php/jperc/article/view/110. Acesso em: 5 jul. 2025.