Developing Mathematics Instructional Materials. Research, Society and Development, [S. l.], v. 8, n. 9, p. e15891236, 2019. DOI: 10.33448/rsd-v8i9.1236. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/1236. Acesso em: 28 jun. 2025.