高中生“甲烷”心智模型的测评

Assessment of High School Students’ Mental Models of Methane

以二阶诊断测试题为主要工具对高一学生"甲烷"的心智模型建构情况进行了测评,分别围绕甲烷的分子结构、甲烷的稳定性、甲烷的氧化反应、甲烷的取代反应等4个知识点,对心智模型的种类及持有相应种类的学生比例进行了统计和分析,对相关学习困难进行了探讨,研究发现学生建构了4类共7种非科学心智模型。

Using the second-order diagnostic test as the main tool,the mental model construction of"methane"in senior one students was evaluated.Based on the four knowledge points of methane molecular structure,methane stability,methane oxidation reaction and methane substitution reaction,this paper made statistics and analysis on the types of mental models and the proportion of students who hold them,and probed into the related learning difficulties.It was found that students had constructed four kinds of 7 kinds of non scientific mental models.