KARA, F.; INCIKABI, L. Sixth Grade Students’ Skills of Using Multiple Representations in Addition and Subtraction Operations in Fractions. International Electronic Journal of Elementary Education, [S. l.], v. 10, n. 4, p. 463–474, 2018. Disponível em: https://www.iejee.com/index.php/IEJEE/article/view/462. Acesso em: 3 mar. 2024.