基于三重表征的中学化学课堂教学探究——以“氧化还原反应”为例

Research on Chemistry Classroom Teaching of“Redox Reaction”Based on Triple Representation

宏观、微观、符号是物质及其变化所持有的三种表征形式,帮助学生构建三重表征,对其学习化学具有重要意义。本文以高中化学“氧化还原反应”知识点为例,通过问题引导、探究实验以及多媒体手段,立足于不同表征角度,探讨如何在教学中逐步构建三重表征思维,进行宏观、微观和符号三重表征的融合及转化,以培养学生在三重表征之间灵活转换的能力,提高学习效果。

Macroscopically,microscopically and symbolically are the three representations of matter and its changes.It is of great significance to help students construct triple representations in their chemistry study.Taking high school chemistry“oxidation-reduction reaction”as an example,through question guidance,exploratory experiments and multimedia methods,based on different representation angles,this article discusses how to gradually construct a triple representational thinking in teaching,and carry out the macro,micro and symbolic triple representation integration and transform to cultivate students'ability to flexibly switch between triple representations and improve learning effects.