The effect of constructivist model of yager in acquiring the geographical concepts among first intermediate students in geography. Journal Of Educational and Psychological Researches, [S. l.], v. 15, n. 58, p. 323–352, 2018. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/124. Acesso em: 5 may. 2025.