Nafingah, S., Rokhimawan, M.A., Mustadi, A. and Wangid, M.N. 2020. Levels of Inquiry-Interactive Demonstration: Its Effect on Students’ Critical Thinking Ability in Online Learning with the Topic of Waves and Sounds. Jurnal Penelitian & Pengembangan Pendidikan Fisika. 6, 2 (Dec. 2020), 255 - 266. DOI:https://doi.org/10.21009/1.06212.