In each of a number of teaching, learning, and teaching-learning activities. In the laboratory, it is important to consider in parallel the use of media, such as teaching, teaching many students. Need to use the lecture method of teaching in which teaching materials that could be used as a projection and audio system so that students can see and hear through the teaching section, individual learners may choose to use teaching methods research. Teaching materials may be books, lessons, programs, or computer-assisted lessons teach.
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