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化学实验是中学化学教学最常用和最重要的教学手段,对帮助学生理解和掌握化学知识,有着举足轻重的作用。由于受实验条件的限制,部分化学实验的科学性、直观性、探索性和操作性等特点在教学中未能真正体现。因此,在新课改下的化学实验教学中,运用多媒体就显得十分必要,且能最大限度地发挥实验在教学中的作用。例如,通过动画模拟、局部放大、过程演示等技术处理后,学生就能更清楚地观察实验过程,特别是一些设备、条件要求较高或药品毒性较大的实验等,都可以利用多媒体达到较好的教学效果。
Chemistry experiment is the most common and important teaching method in chemistry teaching in middle school. It plays a decisive role in helping students to understand and master chemistry knowledge. Due to the limitations of experimental conditions, some of the characteristics of chemical experiments such as scientificity, intuition, exploratoryness and operability can not be truly reflected in teaching. Therefore, in the new curriculum under the chemistry experiment teaching, the use of multimedia is very necessary, and can maximize the role of experiment in teaching. For example, students can observe the experimental process more clearly through animation simulation, partial enlargement, process demonstration and other techniques. In particular, some devices, devices with higher requirements or high toxicity of drugs, etc. can all use multimedia to achieve better performance Good teaching effect.