Özyıldırım Gümüş, Feride, Nilüfer Zeybek, and Şeyda Aydın. 2021. “TEACHING GEOMETRY WITH DIFFERENT ACTIVITIES TO INVESTIGATE THE STUDENTS’ PERCEPTIONS, ATTITUDES AND SELF-EFFICACIES”. International Online Journal of Education and Teaching 8 (2):1083-1105. https://iojet.org/index.php/IOJET/article/view/1120.