Wanna, S., Puttasarin, T., Kehathan, W. ., & Junjira Sansombat, S. (2025). THE DEVELOPMENT OF EARLY CHILDHOOD FUNDAMENTAL MATHEMATICAL SKILLS IN SHAPES AND FORMS THROUGH EDUCATIONAL GAME-BASED EXPERIENCES. Journal of Research and Innovation for Sustainability (JRIS), 2(2), 16–28. retrieved from https://so17.tci-thaijo.org/index.php/JRIS/article/view/793