MOHAMMED, H. A.; UMAR, M. I.; MONI, R. T. Identifying Mathematics Themes Perceived Difficult by Secondary School Students. The International Journal of Science & Technoledge, [S. l.], v. 2, n. 1, 2014. Disponível em: http://internationaljournalcorner.com/index.php/theijst/article/view/131944. Acesso em: 7 jul. 2024.