Among the many topics in Physical Science, students learn about Radioactivity and particles. I order to have deeper understanding and the application of the topics, the students visited the National Nuclear Energy Agency of Indonesia (BATAN), located in Pasar Jumat Jakarta. During the visit, the students were given detail information about nuclear technology and the work of the agency. The agency shared their mission to develop reliable, sustainable and beneficial nuclear science and technology for mankind, stressing on the utilization, safety and security. The students also had the chance to visit their exhibition hall, where we learned about the very large amount of uranium owned by Indonesia, and the products of radioisotopes and radiopharmaceuticals technology.