TEIXEIRA, Paulo Jorge Magalhães. Analysis of the production of 7th grade students, in posters, about the presence or absence of proportionality in everyday product price situations. TANGRAM - Revista de Educação Matemática, [S. l.], v. 3, n. 3, p. 110–137, 2020. DOI: 10.30612/tangram.v3i3.10869. Disponível em: https://ojs.ufgd.edu.br/tangram/article/view/10869. Acesso em: 16 jul. 2024.