Doç. Dr. Aysun UMAY. “Eski Arkadaşımız Okul Matematiğinin Yeni Yüzü ”. Elementary Education Online 10, no. 1 (December 12, 2023): 1–3. Accessed May 20, 2025. https://ilkogretim-online.org/index.php/pub/article/view/879.