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 sources, such as teaching methods, techniques, in the past taught by the teacher told contents, But the current open opportunity students study information manually. A teacher planning guidance. Psychologists are trying to figure out how to bring the teaching system in private lessons instead of using a teacher; but he thinks the program "learning", which acts in teaching in the classroom by ourselves. or through various media. Fast or slow, depending on the capabilities of each student.