FOSSA, John. Some Considerations Concerning the Teaching of Negative Numbers. REMATEC, Belém, vol. 18, n.º 43, p. e2023024, 2023. DOI: 10.37084/REMATEC.1980-3141.2023.n43.pe2023024.id502. Disponível em: http://www.rematec.net.br/index.php/rematec/article/view/502. Acesso em: 20 may. 2024.