Penelitian ini bertujuan untuk mengetahui bagaimana kelayakan media pembelajaran berbasis web (google sites) pada materi virus kelas x di smk kesehatan kaltara tarakan. jenis penelitian dan pengembangan (r&d) dengan memakai model pengembangan addie. instrumen pengumpulan data yang digunakan yaitu lembar wawancara dan lembar validasi ahli. hasil validasi yang diperoleh dari ahli media sebesar 90%, ahli materi sebesar 89%, dan ahli praktisi sebesar 100%. berdasarkan hasil validasi yang diperoleh dari ketiga ahli menunjukkan bahwa persentase rata-rata validator adalah 93%, sehingga dapat disimpulkan bahwa media pembelajaran berbasis web (google sites) pada materi virus kelas x di smk kesehatan kaltara tarakan dinyatakan sangat layak digunakan dalam proses pembelajaran. kata kunci: media pembelajaran, website, google sites, materi virus

This research aims to find out the feasibility of web-based learning media (google sites) on class x virus material at kaltara tarakan health vocational school. the type of research is the research and development (r&d) using the addie development model. the instruments of data collection used were interview sheets and expert validation sheets. the validation results obtained from media experts were 90%, material experts were 89%, and practitioner experts, show that the average percentage of validators is 93%, so it can be concluded that web-based learning media (google sites) for class x virus material at kaltara tarakan health vocational school is very suitable for use in the learning process. keywords: learning media, website, google sites, virus