Abstract
Use case is one way to analyze the request in software development. There are lecture-style exercises to develop software at the University of Tsukuba Graduate School, and students have been analyzed using the use case. However, because of poor development skill, they had several mistakes during the early stages of creating use cases. So they had spent extra time in correcting it. In this paper, by analyzing the use cases created by the students, I describe the pitfalls one encounters when students creating use cases, and suggest that measures.