The importance of presentation skills rapidly increases in engineering education in Japan. The authors have applied various teaching-method of presentation skills to the course of graduation research for the fifth-grade students of the mechanical engineering program in Yonago National College of Technology. The lectures including teachers' demonstration and basic skills in presentation have resulted in improvement of students' skills. The meeting for announcing the results of graduation research has been opened to the public in cooperation with the Yonago Chamber of Commerce and Industry to give the students incentives to graduation research as well as presentation. The students have mutually evaluated their presentation to get good opportunities for even self-evaluation. This paper discusses the effects and problems of our educational practice.