สมนาม ส. THE DEVELOPMENT OF A THAI LANGUAGE SKILLS PROJECT ACTIVITIES MODEL USING PROJECT-BASED LEARNING, PRACTICAL INTELLIGENCE AND A LANGUAGE SUB-SKILLS APPROACH TO ENHANCE THAI LANGUAGE SKILLS OF BASIC EDUCATION LEARNERS IN CHIANG MAI. Res Comm Soc Dev J [internet]. 2020 Jul. 1 [cited 2026 Oct. 8];14(3):15-27. available from: https://so04.tci-thaijo.org/index.php/NRRU/article/view/241337