Use of frequency tables by prospective teachers to conduct project work. Uniciencia, [S. l.], v. 35, n. 1, p. 139–151, 2021. DOI: 10.15359/ru.35-1.9. Disponível em: https://www.revistas.una.ac.cr/index.php/uniciencia/article/view/14414.. Acesso em: 3 may. 2024.