Basic nursing care includes many kinds of techniques. The aseptic method is especially very important technique among them. We gave students check lists and video tapes in order to master the method by themselves and obtained following results. 1) Students can properly assess their techniques of nursing care by using a check list and watching a video. 2) Students can assess by themselves more effectively in a simple and easy action. 3) Even for a complicated action, students can make better their self-assessments by watching a video.