Helou, Muhammad. “The Effectiveness of the Focus and Classification Strategies in Modifying Alternative Perceptions of Biology For Fifth Grade Scientific Students”. Journal of Kufa Studies Center 1, no. 71(A) (January 16, 2024): 497–518. Accessed August 2, 2026. https://journal.uokufa.edu.iq/index.php/ksc/article/view/14786.