Nitmai P, Keeratichamroen D. A Study of Learning Achievement and Klui Pang-Aw Practical Skills of Grade 9 Students Using Flipped Classroom with Gamification. GS KKU HS [internet]. 2023 Nov. 13 [cited 2026 Sep. 29];11(1):53-64. available from: https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/263244