“实验+媒体”即把传统的实验手段跟现代的计算机技术有机地结合起来。实验方面:结合教材及实验室条件,尽量多安排学生实验,可以是一节课时间(学生实验),更多的是5～8分钟的课堂小实验。让学生通过动手操作,观察现象,分析过程,数据处理等活动,培养学生的科学实验能力。多媒体方面:多媒体课件主要是为教学服务,不必要整节课都用媒体,我采用课件“节”,即针对本节课的内容,用一小段课件,在适当的 “Experiment + Media” combines traditional experimental means with modern computer technology organically. Experimental aspects: Combining teaching materials and laboratory conditions, as much as possible to arrange student experiments, can be a class time (student experiment), more is a 5-8 minute classroom experiment. Allow students to develop scientific experiment capabilities through hands-on operations, observation of phenomena, analysis processes, and data processing. Multimedia: Multimedia courseware is mainly for teaching services. It is not necessary to use media throughout the entire class. I use the courseware “session”, that is, for the content of this lesson, use a small amount of courseware, in appropriate