Yahya Çıkılı, Abdurrahman Gürbüz,. Determining The Strategies They Use When Performing Addition And Subtraction Of Students With Mental Dısabilities. Elementary Education Online [Internet]. 2023 Dec. 12 [cited 2024 Dec. 22];18(2):760-76. Available from: https://ilkogretim-online.org/index.php/pub/article/view/1221