Zülfiye Zeybek, Aslıhan Üstün, Ahmet Birol. The Place of Mathematical Proofs in the Middle Grade Mathematics Textbooks. Elementary Education Online [Internet]. 2023 Dec. 11 [cited 2024 Sep. 29];17(3):1317-35. Available from: https://ilkogretim-online.org./index.php/pub/article/view/748