ด้วงใย ว, สามารถ ภ, ตรีชัย เ, วิหคไพบูลย์ พ. A DEVELOPMENT OF ACTIVITIES MODEL TO PROMOTE THE METHEMATICS PROBLEM SOLVING ABILITY BASED ON PISA ASSESSMENT FRAMEWORK FOR MATHAYOM 1 UNDER THE SECONDARY EDUCATIONAL SERVICE AREA OFFICE 2, BANGKOK. AJPU [Internet]. 2019 Jul. 15 [cited 2024 May 5];10(2):180-93. Available from: https://so01.tci-thaijo.org/index.php/AJPU/article/view/170263