Proportional thinking among students of the Mathematics Department in the College of Basic Education and their attitudes towards it. Journal of the College of Basic Education, [S. l.], v. 27, n. 112, p. 426 –450, 2022. DOI: 10.35950/cbej.v27i112.5171. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/5171.. Acesso em: 3 jul. 2024.