The impact of the proposed strategy in accordance with the objectives of science in achievement and some science operations at the second-grade middle students in chemistry . Journal Of Educational and Psychological Researches, [S. l.], v. 14, n. 52, p. 141–170, 2017. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/278. Acesso em: 5 may. 2025.