Gök, M., and E. Ertem-Akbaş. “EXAMINING THE ATTITUDE CHANGE OF PRE-SERVICE ELEMENTARY SCHOOL TEACHERS TOWARDS A COURSE OF MATHEMATICS EDUCATION WITHIN THE FRAMEWORK OF THEORY OF DIDACTICAL SITUATIONS”. International Online Journal of Education and Teaching, vol. 6, no. 4, Oct. 2019, pp. 879-04, https://iojet.org/index.php/IOJET/article/view/665.