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中学化学课程有大量实验内容,学习者主要通过实验来掌握相关理论知识。但由于受实验室客观条件限制,学习者在课后复习中不能及时进行实验操作,不利于知识的巩固。多媒体技术使得视频演示类实验应运而生,这种实验文件传播量大,播放连续,形象生动,且可以反复使用,不受时间限制,便于实时学习。但这种实验只是实验现象的演示,缺少交互。学习者只能观看实验过程,不
The middle school chemistry course has a lot of experimental content, and learners mainly master the relevant theoretical knowledge through experiments. However, due to the limitations of the objective conditions in the laboratory, learners cannot perform experiments in time after class review, which is not conducive to the consolidation of knowledge. Multimedia technology makes video demonstration experiments come into being. This experimental file has a large amount of transmission, continuous playback, vivid images, and can be used repeatedly, without time constraints, and facilitates real-time learning. But this kind of experiment is just a demonstration of experimental phenomena and lacks interaction. Learners can only watch the experiment process, not