传统的教学媒体是教师语言、黑板板书和文字材料,它注重于抽象的说理,“听”和“说”为其信息传递的主要方式。而新兴的多媒体技术,能交互地综合处理文字、声音、图形、图像、动画及活动影像,它使得教学突破了时间和空间的限制,突出了形象性,注 The traditional teaching medium is the language of teachers, blackboards and writing materials. It focuses on abstract reasoning, “listening” and “talking” as the main ways of information transmission. The emerging multimedia technology, interactively integrated processing of words, sounds, graphics, images, animation and video activities, which makes the teaching of a breakthrough time and space constraints, highlighting the image, note