高中生化学符号表征能力的测评研究

Assessment of Chemical Symbols Representation Ability of Senior High School Students

学生化学符号表征能力的高低，直接影响学生能否科学地思考和解决化学问题，反映了学生化学学习的水平。依据化学学习的特点，对化学符号表征能力进行了水平构建，开发和优化了测量工具，并且实施了能力测量及数据分析。研究显示符号表征能力测量工具具有良好的信度、效度。大样本测试数据表明：高一和高二学生的符号表征能力并没有显著性差异，而都与高三学生有显著性差异；3类不同层次学校的学生在符号表征能力上具有显著性差异；男生的符号表征能力高于女生。

Chemical symbols representation ability directly determined whether students could scientifically think or solve chemistry questions, reflected their chemistry learning levels. This paper developed levels of chemical symbols representation ability, and analyzed the chemical symbols representation ability of senior high school students using optimized measurement tool, the measurement tool had good validity and reliability. The results showed the differences of chemical symbols representation ability of students of different genders, grades and schools.