Salim, S. H. ., R. H. . Elwan, S. A. L. . Abdelaty, N. A. . Younis, N. A. H. H. . Nounou, and Z. A. A. . Ismail. “The Effectiveness Of Using Representative Activities In Developing Mathematical Concepts Among Pre-School Children”. Migration Letters, vol. 21, no. S4, Feb. 2024, pp. 435-50, https://migrationletters.com/index.php/ml/article/view/7246.