TORRES, María D.; CAÑADAS, María C.; MORENO, Antonio; GÓMEZ, Pedro. Structures in direct and inverse forms of a function evidenced by 7–8-year-old students. Uniciencia, [S. l.], v. 35, n. 2, p. 1–16, 2021. DOI: 10.15359/ru.35-2.16. Disponível em: https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/14695. Acesso em: 25 apr. 2026.