Penelitian ini bertujuan untuk mendeskripsikan kevalidan, kepraktisan, serta mengetahui keefektifan media game edukasi “Wordwall Science” berbasis android pada materi Sifat dan Perubahan Wujud Benda kelas IV sekolah dasar. Jenis penelitian yang digunakan pada penelitian ini adalah jenis penelitian R&D atau Research and Development. Serta menggunakan rancangan penelitian dan pengembangan model ADDIE (Analysis, Design, Development, Implementation, Evaluation). Berdasarkan penelitian yang telah dilakukan diperoleh kevalidan media dari validator ahli media dengan presentase sebesar 91% yang dapat dikategorikan valid dan layak digunakan. Kemudian hasil dari validator ahli materi dengan presentase sebesar 91% yang dapat dikategorikan valid atau layak digunakan. Untuk hasil dari kepraktisan media diperoleh nilai presentase sebesar 95,4% dikategorikan sangat praktis dan layak untuk digunakan. Dan untuk hasil keefektifan media yang dianalisis menggunakan metode N-Gain Score menunjukkan bahwa nilai N-Gain rata-rata sebesar 0,75 yang masuk dalam kategori keefektifan tinggi.
The goals of this research to describe the validity, practicality, and determine the effectiveness of the android-based educational game media "Wordwall Science" on the material of Properties and Changes in the Form of Objects for grade IV elementary school. The type of research used in this study is the type of R&D or Research and Development research. And using the ADDIE (Analysis, Design, Development, Implementation, Evaluation) model research and development design. Based on the research that has been done, the validity of the media from the media expert validator was obtained with a percentage of 91% which can be categorized as valid and feasible to use. Then the results of the material expert validator with a percentage of 91% which can be categorized as valid or feasible to use. For the results of the practicality of the media, a percentage value of 95.4% was obtained, categorized as very practical and feasible to use. And for the results of the effectiveness of the media analyzed using the N-Gain Score method, it showed that the average N-Gain value was 0.75 which was included in the high effectiveness category.