HARKNESS, William L.; LANE, Jill L.; HARWOOD, John T. A COST-EFFECTIVE MODEL FOR TEACHING ELEMENTARY STATISTICS WITH IMPROVED STUDENT PERFORMANCE. Online Learning, Boston, MA, v. 7, n. 2, 2019. DOI: 10.24059/olj.v7i2.1850. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/1850. Acesso em: 25 mar. 2026.