Ahmet TEKBIYIK, Mustafa ÇELİK. SECOND GRADERS’ MENTAL MODELS AND IMAGES CONCERNING THE CONCEPTS OF EARTH AND SPACE. IJOESS [Internet]. 2016 Dec. 1 [cited 2025 May 17];7(25):271-89. Available from: https://rrpubs.com/index.php/ijoess/article/view/873