Ukdem, S., & Cetin, H. (2022). INVESTIGATING THE IMPACT OF INTERVENTIONS USING CONCRETE AND VIRTUAL MANIPULATIVES ON 3 TH GRADE STUDENTS’ FRACTION CONCEPT AND MOTIVATION: . International Online Journal of Education and Teaching, 9(3), 1113–1131. Retrieved from https://www.iojet.org/index.php/IOJET/article/view/1674