عبد الكبير س.أ.ع. 2021. HOW MANY SQUARES AND RECTANGLES ARE DRAWN IN A SQUARE OR RECTANGLE DIVIDED INTO SMALL SQUARES?. Electronic Journal of University of Aden for Humanity and Social Sciences. 2, 3 (Sep. 2021), 376–393. DOI:https://doi.org/10.47372/ejua-hs.2021.3.117.