Abstract
In this study, case method teaching materials using the medium of manga were utilized to examine the ability of university teachers who want to become elementary school teachers to discern problems occurring in science classes. For the case method teaching materials, manga about science classes that included a variety of different problems within their plots and that depicted focus points relating to learning environments, experimental skills, teaching methods and lesson plans were used. The study was carried out with 115 university students who wanted to be teachers. They had to discern the places in the manga where the problems occurred and then explain each problem in detail. From this exercise, it was ascertained that, to a certain extent, the students were able to discern problems relating to class guidance for unexpected events requiring an immediate response, but they were unable to sufficiently discern them with regard to all of the focus points.