CAO, T. H.; NGUYEN, H. C. .; DANG, X.-C. .; CHU, C. T. .; LE, T. A. .; LE, T. T. H. . Exploring Numeracy Skills of Lower Secondary School Students in Mountainous Areas of Northern Vietnam. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 21, n. 10, p. 309–324, 2022. Disponível em: https://ijlter.net/index.php/ijlter/article/view/1444. Acesso em: 21 apr. 2026.