Tolemariam Boka, Ashebir Bezabih, Sisay Tadesse, Anteneh Wasyhun. Awareness and Perceptions towards Practices of Twenty-First Century Skills in Chemistry Education in the Secondary Schools. IJSBAR. 2024;73(1):548-578. Accessed September 18, 2025. https://www.gssrr.org/JournalOfBasicAndApplied/article/view/17097