由于计算机与多媒体技术的迅速发展,越来越多的教师开始在课堂教学中应用多媒体课件。但是要制作成功一个多媒体课件往往要耗费很多的时间和精力。于是,很多老师只有在开设公开课时,才真正花时间去制作课件。为了一场公开课,多名教师费尽心机苦战多日,方才磨出一个课件,而在平时教学中则敬而远之了。这给多媒体教学的普及工作带 Due to the rapid development of computer and multimedia technology, more and more teachers began to use multimedia courseware in classroom teaching. However, it takes a lot of time and effort to make a successful multimedia courseware. As a result, many teachers only really spend time making courseware when they open an open class. For an open class, more than one teacher struggled hard for many days before grinding out a courseware, but in the usual teaching is far removed. This brings popularity to multimedia teaching