“Development of Digital Pop-Up Book-Based Learning Media on Waves Material in Integrated Science and Social Studies (IPAS) for Elementary School Students”. Marlajar: Journal of Science, Technology, and Innovation 1, no. 2 (August 6, 2026): 69–77. Accessed August 27, 2026. https://journal.taromboresearch.com/index.php/marlajar/article/view/39.