The Effect of Lead Time Strategy on the First Intermediate Class Pupils’ Achievement in Geography . Journal Of Educational and Psychological Researches, [S. l.], v. 14, n. 54, p. 351–388, 2017. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/237. Acesso em: 4 may. 2025.