SARI, P.; HAJIZAH, M. N.; PURWANTO, S. The neutralization on an empty number line model for integer additions and subtractions: Is it helpful?. Journal on Mathematics Education, [S. l.], v. 11, n. 1, p. 1–16, 2020. Disponível em: https://jme.ejournal.unsri.ac.id/index.php/jme/article/view/3677. Acesso em: 24 jun. 2025.