Rıdvan KETE, Yasemin HORASAN, Bahadır NAMDAR. Investigation of the Conceptual Understanding Difficulties in 9th Grade Biology Books About Cell Unit . Elementary Education Online [Internet]. 2023 Dec. 16 [cited 2024 Jul. 3];11(1):95-106. Available from: https://ilkogretim-online.org/index.php/pub/article/view/3683