Pitiporntapin, Sasithep, Oraphan Butkatanyoo, Chatsiri Piyapimonsit, Thananun Thanarachataphoom, Sareeya Chotitham, and Usanee Lalitpasan. “The development of a professional development model focusing on outdoor learning resources to enhance in-service teachers’ STEM literacy”. Kasetsart Journal of Social Sciences 44, no. 2 (June 20, 2023): 489–496. accessed December 7, 2025. https://so04.tci-thaijo.org/index.php/kjss/article/view/266278.