UKDEM, S.; CETIN, H. 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, [S. l.], v. 9, n. 3, p. 1113–1131, 2022. Disponível em: https://www.iojet.org/index.php/IOJET/article/view/1674. Acesso em: 9 jan. 2026.