The seminar entitled “Major Anatomy of 100 Yen Lighter” has been held in the first semester of our Institute since 1999. The purpose of the seminar is to motivate students to learn physics and materials science in a class of learning by experience. Five or six pairs of students are requested to clarify the lighting mechanism of a piezoelectric 100 yen lighter within 90 minutes. Each pair takes the lighter apart to pieces and finds the energy conversions playing essential roles in the lighting. The seminar was programmed in Freshman Seminar of two departments of electronics from 1999 to 2009 and selected as the most impressive one by the students from 2000 to 2005. The seminar also has been held as Laboratory Inspection built in HIT Intensive Program for students from the University of Illinois since 2002. The educational effects activating both Japanese and American students are shown in the seminar reproduced on this report.