A comparative study between the old and modern methods of the books of mathematics for the middle stage in Iraq. Journal of the College of Basic Education, [S. l.], v. 26, n. 107, p. 429–455, 2022. DOI: 10.35950/cbej.v26i107.5107. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/5107.. Acesso em: 3 jul. 2024.