“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 ” (2017) Journal Of Educational and Psychological Researches, 14(52), pp. 141–170. Available at: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/278 (Accessed: 5 May 2025).