smartboard won't turn on.Electronic whiteboard teaching has both a traditional "blackboard classroom" and a modern "audio education platform." As a classroom of information technology courses, most teachers use multimedia audio-visual means to teach. The "disadvantages" of multimedia audio-visual education are analyzed in the previous section, and the shortcomings of traditional blackboard teaching are obvious in the teaching of information technology. For example, the teacher can easily become a ??full-sentence?? teaching of ??full house??, unable to display rich teaching resources more vividly, and can not make the abstract teaching content be well interpreted. The interactive whiteboard can be like a traditional blackboard. Writing, circle, annotation, marking, and multimedia resources, courseware can be used for teaching. The teaching model of ??Blackboard + Audio-visual Platform?? strengthens the participation and interaction of teachers and students. Teachers use the writing of electronic whiteboards, traditional body language, rich expressions, etc., so that classroom teaching really moves.