หินขาว ท. and เอกะกุล ธ. (2021) “A Development of the Basic Mathematical Skills Based on the Educational Game Activities for the Pre-School Students of Ban Nokten School under Ubon Ratchathani Primary Educational Service Area Office 3 ”, Ubon Ratchathani Journal of Research and Evaluation, 3(1), pp. 30–38. available at: https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/250927 (accessed: 4 October 2026).