Gülcan Mıhladız Turhan and Işıl Açık Demirci (2024) “What Are the 21st-Century Skills for Pre-service Science and Mathematics Teachers: Discussion in the Context of Defined 21st-Century Skills, Self-skills and Education Curricula”, Journal of Educational Issues, 7(1), pp. pp. 92–112. doi: 10.5296/jei.v7i1.18278.