ALLEN-LYALL, B. Helping Students to Automatize Multiplication Facts: A Pilot Study. International Electronic Journal of Elementary Education, [S. l.], v. 10, n. 4, p. 391–396, 2018. Disponível em: https://iejee.com/index.php/IEJEE/article/view/325. Acesso em: 3 mar. 2024.