Analysis of the content of the third-grade middle school mathematics book according to algebraic thinking and the extent to which students possess it. Journal of the College of Basic Education, [S. l.], v. 30, n. 130, p. 49–79, 2025. DOI: 10.35950/cbej.v30i130.13089. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/13089.. Acesso em: 4 jun. 2026.