Emre Ev Çimen, Şafak Yıldız (2017) “A Review of Problem Posing Activities in Secondary School Mathematics Textbooks”, Turkish Journal of Computer and Mathematics Education (TURCOMAT), 8(3), pp. 378–407. Available at: https://textitlejournal.com/turcomat.org/index.php/turkbilmat/article/view/160 (Accessed: 12September2025).