RAJA, Jinan Ahmed.
 The impact of the use of the strategy of teaching based on the method of solving problems in the acquisition of mathematical concepts among students in the preparatory stage in Iraq | Field study of Fourth Grade students.
<strong>Journal of Al-Frahedis Arts | مجلة آداب الفراهيدي</strong>, [S.l.], v. 11, n. 02, p. 421-439, aug. 2019.
ISSN 2663-8118.
Available at: &lt;<a href="https://www.jaa.tu.edu.iq/index.php/art/article/view/537" target="_new">https://www.jaa.tu.edu.iq/index.php/art/article/view/537</a>&gt;. Date accessed: 15 aug. 2021.
doi: <a href="http://dx.doi.org/10.25130/art.v1i37.537">http://dx.doi.org/10.25130/art.v1i37.537</a>.