07.3.功和能(国外英文资料).doc

07.3.功和能(国外英文资料) Work and energy First, teaching objectives 1. based on the law of conservation of energy to study mechanical on the study of gravity and spring force other than the work force, learning methods to deal with these problems. 2. of the work and energy and the relationship between understanding and awareness is the key content of this chapter of teaching, the teaching is the teaching content summary of this chapter. Through this section of teaching to make students more in-depth understanding of the relationship between work and energy, clear objects mechanical energy changes, and it can be used to solve the related problems. 3. through this section of teaching, so that students can be more comprehensive and in-depth understanding of the relationship between work and energy, can be used for students in the future work and energy analysis in the view of thermal and electrical knowledge, for students to lay the foundation for a better understanding of the transformation in nature is another important law and the law of conservation of energy. Two, analysis of the key and difficult The 1. focus is to enable students to know and understand the mechanical energy of objects changes, grasp the method of applying this principle to solve the problem. On this basis, in-depth understanding and awareness of the relationship between work and energy. The 2. section teaching essence is the permeability function principle point of view, do not have to name the principle of function in teaching. The difference and connection between the content and the function principle of kinetic energy theorem is the difficulty of teaching, in order to solve this difficult problem, must make the student understanding of power is a measure of energy conversion, in general, superficial understanding into the clear understanding of change to some form of energy, work to measure with what force. Know and understand the work and energy of 3. concepts and their relations, not only is the