一、克服传统教学弊端,产生强烈的视听效果以往的教学活动是由教师、学生、媒体三个要素构成的,缺一不可。大多数教学媒体都具有直观性,但各有所长,也各所短。传统教学媒体中有教师语言、课本、板书、实物、模型、挂图等,都具有一定的局限性。而多媒体能使学生不由自主地集中全部注意力,引起学生的浓厚兴趣,激发学生强烈的情感,从中获得直接、生动、形象的感性知识。教师在授课过程中,恰当地选用教学媒体,能更好地把知识技能传授给学生,加快师生间的信息传递,优化教学过程,从而获得 First, to overcome the shortcomings of traditional teaching, resulting in a strong audio-visual results Past teaching activities by the teachers, students, the media constitute the three elements, are indispensable. Most instructional media are intuitive, but each has its own strengths and shortnesses. There are some limitations in traditional teaching media such as teacher's language, textbook, blackboard, real object, model, flipchart and so on. Multimedia can make students involuntarily concentrate all attention, arousing students 'strong interest, inspire students' strong emotions and get direct, vivid and vivid sensual knowledge. Teachers in the teaching process, the appropriate choice of teaching media, better able to pass on knowledge and skills to students, to speed up the transfer of information between teachers and students to optimize the teaching process, in order to obtain