The purpose of educational technology is to expand educational resources to learn not only in school textbooks, teachers and teaching materials only. The concept of educational technology need to have the opportunity to learn from the extensive knowledge source for another, such as teaching techniques. Formerly teacher who told the content, but the current content. Opportunity for students to research it myself, at most, a teacher planning guidance only. Psychologists have attempted to figure out how to bring the system to the private lesson but instead taught individually, but he also thinks the ' learning ' program, which serves to teach the same as teachers teach. Students in a class by themselves or through a media mix. Slow or fast, it will be based on the ability of each student