1.
Khamlue K, Pharanat W. The Development of Group Investigation Learning Activities for High School Students, Informal and Independent Education Center. IARJ [internet]. 2023 Dec. 5 [cited 2026 Oct. 11];3(6):797-814. available from: https://so03.tci-thaijo.org/index.php/IARJ/article/view/270915