SEO, B.-I. An investigation of how 7th grade and 8th grade students manipulate mathematical writing elements. Perspectives in Education, [S. l.], v. 37, n. 2, p. 141–159, 2019. DOI: 10.18820/2519593X/pie.v37i2.10. Disponível em: https://journals.ufs.ac.za/index.php/pie/article/view/4034. Acesso em: 26 apr. 2024.