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回到办公室里,想起了刚刚课堂上发生的一个小插曲,觉得我对刚才在课堂上临时生成问题的解决比较满意。尽管在细节的处理上可能有些粗糙,但是我还是决定把它记下来与同行一起分享。在讲到“溶液酸碱性的强弱程度”时,我设计了这样的过渡语,抛给学生一个问题:“利用酸碱指示剂的颜色改变,我们可以判断溶液的酸碱性,那么怎样知道溶液酸碱性的强弱呢?”停顿了片刻,一名学生回答:“可以看酸碱指示剂颜色变化的深浅。变得深的,说明酸碱性就
Returning to my office, I remembered an episode that just happened in class, and felt that I was satisfied with the solution I just created in the classroom. Although the details of the handling may be a bit rough, but I still decided to put it down to share with colleagues. When it comes to ”the degree of acid-base solution “, I designed this transitional language, throwing the students a question: ”The use of acid-base indicator of the color change, we can determine the acid-base solution , Then how do you know the strength of acid-base solution? “” Pause for a moment, a student replied: "You can see the depth of acid-base indicator of color change.