Cahyani, Astiti Nur, Merta Simbolon, and Algiranto. “The Development of LKPD (Student Worksheet) Assisted by PhET Simulation on Sound Wave Material”. International Journal of Applied Educational Research (IJAER) 2, no. 6 (June 19, 2025). Accessed April 30, 2026. https://journal.multitechpublisher.com/index.php/ijaer/article/view/3119.