Na Ubo, Piyatida, and Ritthikrai Chai-ngam. “The Study of the Effect of Unplugged Coding Leaning Activity on Computational Thinking Skill of Grade 3 Students”. Journal of Education Rajabhat Maha Sarakham University 19, no. 2 (August 25, 2022): 144–153. accessed September 2, 2026. https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/258621.