新课的导入是教学活动的起点,各学科的运用方法虽不尽相同,但用意是一样的,即强化刺激,引发学习动机和求知欲,为教师教学和学生学习创造良好的心理情境。运用电教媒体导入新课,不仅能创求知氛围、开思维闸门、起激趣导向之用,且能使这一环节充满情趣,引人入胜,让学生迅速步入昂奋的学习状态。通过在数学教学中的电教实践,笔者总结归纳出几种新课导入教法。一、电教激趣兴趣是获取知识、开阔眼界、调控心理情境的巨大动力,是引发大脑皮层兴奋的重要激因。布鲁纳说,学习最好的刺激是对学习材料的兴趣,对兴趣的激发不仅要有理智的认识,而且要有情感的体验。教师讲一段精彩的笑话或趣闻、故事,都是良 The introduction of the new course is the starting point of teaching activities. Although the methods of applying various disciplines vary, the intention is the same, that is to say, to strengthen the stimuli, trigger the motivation of learning and curiosity, and create a good psychological situation for teachers’ teaching and student learning. The use of audio-visual media into the new lesson, not only to create an atmosphere of knowledge, open the door to thinking, from the fun-oriented use, and can make this part full of fun, fascinating, allowing students to quickly into the excitement of learning. Through the teaching of mathematics in the practice of audio-visual education, I summarize several new lessons into the teaching. First, the interest of audio-visual excitement is to obtain knowledge, broaden their horizons, the psychological control of great motivation, is an important cause of excitement of the cerebral cortex. Bruner said the best stimulus for learning is the interest in learning materials. The excitement of interest requires not only sensible understanding, but also emotional experience. Teachers say a wonderful joke or anecdotes, stories, are good