CHOONG, S. H.; FOO, K. K.; TANG, H. J.; LAI, M. L. Effectiveness of Abacus Hoop© Prototype on Primary School Students’ Mathematics Achievement. Environment-Behaviour Proceedings Journal, [S. l.], v. 10, n. SI43, 2026. Disponível em: https://ebpj.e-iph.co.uk/index.php/EBProceedings/article/view/7719. Acesso em: 27 jan. 2026.