The effect of the lock and key strategy on the achievement of first-year middle school students in social studies and their logical thinking. Journal of the College of Basic Education, [S. l.], v. 2, n. عدد خاص, p. 572–588, 2025. DOI: 10.35950/cbej.v2iعدد خاص.13196. Disponível em: https://cbej.uomustansiriyah.edu.iq/index.php/cbej/article/view/13196.. Acesso em: 4 jun. 2026.