نزار المختار ر. “The Effect of Using the Cognitive Instruction Model on Third Grade Female Students Achievement at the Female Teachers Training Institute /Ninavah Mosul and Thier Attitudes towards Mathematics”. College of Basic Education Research Journal, vol. 10, no. 2, June 2011, pp. 114-5, https://jeh.uomosul.edu.iq/index.php/berj/article/view/38385.