Iamngam, Kanokwan, and Attaporn Ridhkerd. 2019. “A DEVELOPMENT OF WEB-BASED INSTRUCTION WITH JIGSAW TECHNIC ON THE ASTRONOMY AND SPACE FOR GRADE 4 STUDENTS”. Journal of Industrial Education 18 (3):45-52. https://ph01.tci-thaijo.org/index.php/JIE/article/view/193918.