Noppon S. (Retracted Article) THE DEVELOPMENT OF A TEACHING MODEL BASED ON CONSTEUCTIVISM THEORY TO ENCHANCE THE SCIENTIFIC CONCEPTS OF GEADE 12 UNDER THE JURISDICTION OF NAKHON SI THAMMARAT MUNICIPALITY. JSC [internet]. 2023 Oct. 31 [cited 2025 Dec. 11];7(10):192-20. available from: https://so06.tci-thaijo.org/index.php/JSC/article/view/268316