Tanukaew, Kunnika T, and Chakkrid Klin-eam. β€œTHE DEVELOPMENT OF MATHEMATIC LEARNING ACTIVITIES USING ACTIVITY – BASED LEARNING TO ENHANCE SYSTEMS THINKING ABILITY ON THE TOPIC OF PARALLELOGRAMS FOR STUDENTS IN GRADE 5”. Journal of Buddhist Education and Research (JBER) 10, no. 2 (June 30, 2024): 1–15. accessed August 28, 2026. https://so06.tci-thaijo.org/index.php/jber/article/view/275970.