Usta, Neslihan, and Şeyma Söylemez. 2020. “EFFECTIVENESS OF UTILIZING SCENARIO-BASED INSTRUCTION TO TEACH ‘FUNCTIONS’ TO HIGH SCHOOL STUDENTS IN MATHEMATICS CLASSES”. International Online Journal of Education and Teaching 7 (4):1791-1821. https://www.iojet.org/index.php/IOJET/article/view/981.