Abdullah KAPLAN, and Mesut ÖZTÜRK. “Analysis of 2nd-8th Grade students’ Thinking Approaches Toward Understand the Concept of Symmetry”. Elementary Education Online 13, no. 4 (December 14, 2014): 1502–1515. Accessed July 5, 2024. https://ilkogretim-online.org./index.php/pub/article/view/6400.