1.
Weerasin W, Akatimagool S. Development of an Instructional Activity Package Based on the Problem-solving Process for Electromagnetic Wave Education. pnujrhuso [internet]. 2019 Jul. 19 [cited 2026 Sep. 30];6(2):48-59. available from: https://so05.tci-thaijo.org/index.php/pnuhuso/article/view/139118