“Determine the Extent to Which the Next Generation Science Standards (NGSS) Are Incorporated into the Tenth-Grade Chemistry Textbook Used in Secondary Schools in the Republic of Yemen”. Sana’a University Journal of Human Sciences 3, no. 6 (October 29, 2024): 64–97. Accessed April 19, 2026. https://journals.su.edu.ye/index.php/jhs/article/view/942.