LIU, K.; WU, J. The Effect of Online Homework (IXL) on Students’ Mathematics Achievement. Asian Journal of Education and Training, [S. l.], v. 7, n. 4, p. 244–249, 2021. DOI: 10.20448/journal.522.2021.74.244.249. Disponível em: https://asianonlinejournals.com/index.php/EDU/article/view/3472. Acesso em: 29 mar. 2024.