Robot Arena in Muroran Institute of Technology was established in 2010 and has held numerous hands-on classes for elementary and junior high school students in these three years. The total number of the participants is 1,442 by the end of March in 2014, and they mainly came from Muroran-shi and surrounded municipalities and accounted for 4.3% of all pupils in the elementary schools and the junior high schools. In this paper, we analyze the applicant data of the hands-on classes accumulated since establishment. We evaluate their needs, new clients trends, repeaters trend, and so on. We found the trend of the new clients such that they tend to apply the classes held on the summer, winter, and spring vacations. We provided new contents for the hands-on classes regularly. It assists fostering of the repeaters. The numbers of the repeaters who have attended over 10 times is more than 30. Mainly one-off contents were provided for the hands-on class. They were helpful to encourage pupils to attend the classes who lived in widely distributed area. In the next stage, development of the high level contents is required for the youth, who are interested in science and technology, such as the repeaters.
