Gelu, Afrianus, Putut Marwoto, and Mahardika Prasetya Aji. 2020. “Remediation of Sound Wave Material Assisted by Sasando to Improve Understanding of Concepts and Analytical Thinking Abilities”. Journal of Innovative Science Education 9 (2), 203 -9. https://doi.org/10.15294/jise.v8i3.34805.