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教学媒体是一种知识载体,它既是教师的辅助工具,又是学生的认知工具.利用多媒体系统的声音、图像压缩技术可在短时间内传输、储存、提取或呈现大量的语音、图像、活动画面等信息,在有限的时间、空间内打破地域界限展现古今中外的客观事物,大大地缩短认识进程,起到呈现事实、创设情境、设疑思辩、动作示范的作用.此外,多媒体技术在教学中的应用还具有易操作、使用方便、交互性强的特点,在教学中有着重要作用.本文从以下四个方面谈谈它在化学教学中的应用.
Teaching media is a kind of knowledge carrier, it is not only a teacher's auxiliary tool, but also a student's cognitive tool.Using the voice of multimedia system, image compression technology can transfer, store, extract or render a large amount of voice, image, Activities, pictures and other information within a limited time and space to break the geographical boundaries to show the objective things at any time and at home and abroad, greatly reducing the cognitive process, played the facts, create situations, doubts and controversy, action demonstration role.In addition, multimedia technology in The application of teaching also has the characteristics of easy to operate, easy to use and interactive, which plays an important role in teaching.This article discusses its application in chemistry teaching from the following four aspects.