基于Corel软件的四重表征设计在酸碱滴定中的运用

Application of Tetra-representation Design Based on Corel Software in Acid-base Titration

在运用四重表征教学理论的基础上,运用Corel ChemLab软件,提出酸碱中和滴定的教学设计,主要包括创设实验情境、酸碱中和滴定概念与原理、指示剂的概念及使用原则、滴定突跃等内容。研究结果表明,该教学设计将复杂的操作简单化、微观的过程宏观化,同时运用"宏观-微观-符号-曲线"四重表征分析酸碱中和滴定,更好地帮助学生理解,培养化学学科观念和科学精神。

Based on the teaching theory of tetra-representation,using Corel ChemLab software,the teaching design of acid-base neutralization titration was proposed,which mainly included the creation of experimental situations,the concept and principle of acid-base neutralization titration,the concept of indicator and the principle of use,Titration jump,etc.The results of the study showed that the instructional design simplified complex operations and macroscopically microscopic processes.At the same time,it used the"macro-microscopic-symbol-curve"tetra-representation to analyze acid-base neutralization titration to better help students understand and cultivate chemistry discipline concept and scientific spirit.