The effect of two treatment methods in the gaining of fourth grade students in geography object. Journal Of Educational and Psychological Researches, [S. l.], v. 7, n. 25, p. 15–46, 2010. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/684. Acesso em: 6 may. 2025.