Rattanasaensri K, Gumjudpai S, Prabhong U- sa. Development of Scientific Instructional Model Based on the Service Learning Concept in Constructionism and Active Learning for Primary Students. J.Humanities Social Sciences [internet]. 2024 Dec. 25 [cited 2025 Apr. 10];7(6):3381-40. available from: https://so04.tci-thaijo.org/index.php/jmhs1_s/article/view/272457