Ratniyom, Nutnapha, and Pavinee Sothayapetch. “A Study of Readinesses of Stem Instructional Management at the Elementary School Level in Bangkok Metropolitan”. An Online Journal of Education 16, no. 2 (December 17, 2021): OJED1602052 (13 pages). Accessed May 4, 2024. https://so01.tci-thaijo.org/index.php/OJED/article/view/253314.