Yılmaz, G., & 		Kacar, A.
(2017).
 On the Teaching Polygons to Primary School 7th Grade Students Using Vee Diagrams and Mind Maps.
<em>BaşKent University Journal Of Education, 3</em>(1), 13-24.
Retrieved from <a href="http://buje.baskent.edu.tr/index.php/buje/article/view/54" target="_new">http://buje.baskent.edu.tr/index.php/buje/article/view/54</a>