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有关牛顿第二定律的教学在高中物理中占有极其重要的地位。上好这节课的关键是做好牛顿第二定律的演示实验,而做好演示实验是这节课的教学难点和重点。为了克服该实验难做、不易观察、准确性差、没有说服力等缺点,笔者在教学中吸取课本演示实验的优点,对它进行改进,同时在教学中采用先进的电教媒体的方法,收到了良好的教学效果。一、实验不足和改进设想1.实验不足。高中物理教材第一册(必修)提供的实验方法其优点是简单易行,不必测量时间,且形象生动,能激
The teaching of Newton’s second law occupies an extremely important position in high school physics. The key is to do a good job this Newton’s second law demonstration experiment, and do a good demonstration experiment is the lesson of teaching difficulties and priorities. In order to overcome the difficulty of the experiment, not easy to observe, the accuracy is poor, there is no convincing and other shortcomings, the author draw lessons from the advantages of textbook demonstration experiment, to improve it, while teaching the use of advanced audio-visual media approach, received a good The teaching effect. First, the lack of experiments and improve the imagination 1. Experiment is not enough. The first high school physics textbooks (compulsory) to provide the experimental method has the advantage of easy, do not have to measure the time, and vivid, can stimulate