ÖZSOY, Sibel. Is the earth flat or round? Primary school children’s understandings of the planet earth: The case of Turkish children. International Electronic Journal of Elementary Education, [S. l.], v. 4, n. 2, p. 407–415, 2017. Disponível em: https://www.iejee.com/index.php/IEJEE/article/view/207. Acesso em: 4 aug. 2026.