ศุภพิมลวรรณ ส, เจนจิต อ, จตุรานนท์ ว. Development of the Mathematical Instructional Model Based on Constructivism in Developing Creative Problem-Solving Ability for the 8th Grade Students. Pitchayatat [Internet]. 2020 Aug. 26 [cited 2024 May 5];15(2):189-9. Available from: https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/225646