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物理规律是物理学理论体系中最核心的内容,只有掌握了物理规律,才能遵循这些规律去分析、处理千变万化的物理问题.因此,理解和掌握物理规律理所当然地也就成为学习物理的中心任务,更是物理教师教学中的重中之重.但是,在物理规律的教学中,经常遇到这样二个问题:一是如何总结得出物理规律的数学表达式:实际教学中,通过实验得出正比例或者反必例关系式,这是很容易的.但是,如何从正反
The law of physics is the core content of the theoretical system of physics. Only by mastering the laws of physics, can we follow these laws to analyze and deal with the ever-changing physics problems. Therefore, understanding and mastering the laws of physics naturally becomes the central task of learning physics. It is the most important thing in physics teachers’ teaching. However, in the teaching of physical laws, such two problems are often encountered: First, how to sum up the mathematical expressions of the physical laws: In practical teaching, it is obtained through experiments. It is easy to proportional or counterexample relationship. However, how to use positive and negative