خضر Azhar, ازهار, Wassf Younis, and وصف. “The Mental Arithmetic Strategy on the Achievement Among Fourth Grade Girl Students”. Journal of Education for the Humanities 3, no. 12: 17–38. Accessed October 2, 2025. https://jcis.uomosul.edu.iq/index.php/jeh/article/view/44066.