Wulandari, D., and D. M. Fajar. “DEVELOPMENT OF ANDROID-BASED EDUCATIONAL GAMES, LIGHT MATERIALS, AND OPTICAL TOOLS FOR CLASS VIII SMP/MTS”. JPPIPA (Jurnal Penelitian Pendidikan IPA), vol. 7, no. 2, Dec. 2022, pp. 72-80, doi:10.26740/jppipa.v7n2.p72-80.