Sanloeng, Y., and S. Thoatho. “The Development of Learning Outcome With STEM Education Sciences and Technology Substance Group Entitled ‘Materials Around us’ for Prathomsuksa 2 Students”. Ubon Ratchathani Journal of Research and Evaluation, vol. 10, no. 2, Dec. 2021, pp. 1-11, https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/249967.