A Comparative Study of Proportional reasoning of Costa Rican and Spanish students in ratio comparison problems. Uniciencia, [S. l.], v. 37, n. 1, p. 1–20, 2023. DOI: 10.15359/ru.37-1.21. Disponível em: https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/17524.. Acesso em: 20 apr. 2024.