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一、原电池与电解池的区别与判断在原电池与电解池的教学中,经常会遇到一些学生不会区别与判断原电池与电解池。这是与学生缺乏感性知识以及学习上的遗忘率高有很大的关系。尽管在这两节教材中都安排了演示实验,但这两个演示实验的能见度都比较低,有关的关验装置都是小型的,后排学生不能清楚地看到实验装置,因此印象不深,记忆不牢,在相隔一周左右的两个实验中,已经不能把前一个实验的记忆与一周后的眼前的实验装置来加以对比、区别,这就造成在以后的练习题中无法根据课本知识来加以区别与判断。解决这个问题的比较好的方法是两套实验同时演示,然后根据实物指出相似点与不同点,指出它们的根本不同点在于电解池是一定要有外接电源,而原
I. Differences and judgments between primary batteries and electrolytic cells In the teaching of primary batteries and electrolytic cells, I often encounter some students who will not distinguish and judge primary batteries and electrolytic cells. This has a great relationship with students’ lack of perceptual knowledge and high rates of forgetting in their studies. Although demonstration experiments were arranged in these two materials, the visibility of the two demonstration experiments was relatively low, and the relevant inspection devices were small. The students in the back row could not clearly see the experimental devices, so they were not deeply impressed. The memory is not strong. In the two experiments that were separated by about one week, the memory of the previous experiment could not be compared and distinguished from the experimental apparatus one week later. This resulted in the inability to follow the textbook knowledge in the following exercises. To distinguish and judge. A better way to solve this problem is to demonstrate the two sets of experiments at the same time, and then point out the similarities and differences according to the physical objects, pointing out that their fundamental difference is that the electrolytic cell must have an external power source.