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打好解题的基础在物理教学中,很多学生能作书上的练习题,但如遇内容稍有变动,他们就措手无策了。这是因为学生学了概念、规律,而并不理解,因而谈不上应用。例如,学生对动能定理 W=△E_k,不但能写出,也能背诵,书上的练习也能作。但他们作题时,认为讲了动能定理后,布置的练习,一定用动能定理去作,很少去动脑筋想一想,动能定理有什么特点?它用在什么地方?其实动能定理是联系了力、位移、速度这几个物理量,即联系运动学和动力学的物理量。而牛顿运动定律也把运动学和动力学的量联系在一起,
Laying the Foundation for Problem-Solving In physics teaching, many students can practice the book, but in case of minor changes in content, they are unprepared. This is because students learn the concepts, laws, and do not understand, so no application. For example, the student of kinetic energy theorem W = △ E_k, not only can write, but also recite, book exercises can also be done. However, when they did the questions, they thought that after talking about the kinetic energy theorem, the exercises arranged must use the theorem of kinetic energy to do very little to think about it. What are the characteristics of the kinetic energy theorem? Where is it used? In fact, the kinetic energy theorem is the link Force, displacement, speed of these physical quantities, that is, the physical contact kinematics and dynamics. The law of Newton's kinematics and kinematics also linked the amount,