Tuğrul KAR, Tuğrul KAR, and Cemalettin IŞIK. “Analyzing Problems Posed by Seventh Grade Middle School Students for Subtraction Operation With Fractions”. Elementary Education Online 13, no. 4 (December 20, 2023): 1223–1239. Accessed July 5, 2024. https://ilkogretim-online.org./index.php/pub/article/view/6294.