, S. G. G. S. K. M. D. Hybrid TUI Abacus Model: An Advance Tool for Learning Math. International Journal on Recent and Innovation Trends in Computing and Communication, [S. l.], v. 5, n. 6, p. 865 –, 2017. DOI: 10.17762/ijritcc.v5i6.869. Disponível em: https://ijritcc.org/index.php/ijritcc/article/view/869. Acesso em: 18 jul. 2024.