Aekwongsa, Naritsara, and Pimporn Charuchit. “Development of the Instructional Model Based on Constructive Theory (ECEIL Model) the Efficiency of the Math Exercise of Sequences and Series Based to Enhance Math Learning Abilities of Mathayom 5 Students”. Journal of Intellect Education 2, no. 4 (January 24, 2024): 38–48. accessed April 12, 2025. https://so06.tci-thaijo.org/index.php/IEJ/article/view/270598.