The Effect of A Teaching Strategy According To The (Double Diamond) Model on Mathematical Reasoning The Second Intermediate Grade Students. Journal of the College of Basic Education, [S. l.], v. 31, n. 129, p. 102ـ115, 2025. DOI: 10.35950/cbej.v31i129.12930. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/12930.. Acesso em: 28 apr. 2025.