Duan X, Modehiran P. Enhancing English Speaking Ability through the Integration of Smart Education and Stratified Teaching: A Model for EFL Instruction. IJSASR [internet]. 2025 Jan. 24 [cited 2025 Jun. 26];5(1):659-68. available from: https://so07.tci-thaijo.org/index.php/IJSASR/article/view/5865