Kongkwamsue C. Developing a STEAM-Based ‘DIY Waste-to-Use’ Activity Package to Enhance Creative Innovation Skills in Grade 9 Students. JELDI [internet]. 2025 Dec. 22 [cited 2026 Sep. 17];4(1):24-36. available from: https://so15.tci-thaijo.org/index.php/JELDI/article/view/2395