CENGIZ, C.; AYLAR, E.; YILDIZ, E. Intuitive Development of the Concept of Integers among Primary School Students. International Electronic Journal of Elementary Education, [S. l.], v. 11, n. 2, p. 191–199, 2019. Disponível em: https://iejee.com/index.php/IEJEE/article/view/648. Acesso em: 30 jan. 2025.