在化学实验中强化“有效数字”观念教学

Strengthening the Concept of "Significant Figures"in the Teaching of Chemistry Experiment

大一新生在实验过程中,测量及计算结果保留的"有效数字"位数很随意,这主要是新生不理解"有效数字"的意义。笔者在整个实验过程中贯穿"有效数字"的概念,帮助新生学习和掌握分析化学实验的基本操作技能和数据处理能力。

During the experiment, freshmen keep the significant figures in the measurement and calculation at random. The main reason is that the freshmen do not understand the meaning of sig- nificant figures. The concept of significant figures should be run through during the whole experiment, which can help freshmen learn and master the basic operational skills of analytical chem- istry experiments and data processing capabilities.