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目前,随着计算机辅助教学的广泛应用,大大改善了教学媒体的表现力和交互性,起到了传统媒体所不能呈现的作用。化学是以实验为基础的学科,传统的化学实验存在着许多弊端。如现象不明显,瞬间变化难以把握等。运用信息技术改造传统实验教学,就能增大实验的可信度和可见度并收到良好的教学效果。一、案例有一次在化学课上,学生在做分组实验。我突然发现有几组学生正在拿着玻璃棒在酒精灯上灼烧,使用的镍铬丝玻棒前端已经没有了镍铬丝
At present, with the wide application of computer-assisted instruction, the performance and interactivity of teaching media have been greatly improved, which has played a role that traditional media cannot exhibit. Chemistry is an experiment-based discipline. There are many drawbacks to traditional chemistry experiments. If the phenomenon is not obvious, it is difficult to grasp instantaneous changes. The use of information technology to transform traditional experimental teaching can increase the credibility and visibility of the experiment and receive good teaching results. First, the case was once in a chemistry class. Students were doing group experiments. I suddenly discovered that several groups of students are holding glass rods burning on an alcohol lamp. Nickel chrome wire is no longer used in the front end of nickel-chrome wire glass rods.