The Great Form Has No Shape, Teaching Has Methods

The laws of physics are very important in physical knowledge. physics teachers have always attached great importance to the laws of physics teaching. This article introduces a teaching design based on task analysis. Then teachers carry out activities of the teaching of physical laws based on the particular teaching design.This article’s foundation is predecessors’ theories. Analyze to get the four sections of the teaching designs which under the guidance of teaching task analysis: set the teaching objectives, analyze the teaching tasks, plan teaching events and make the methods of measuring and evaluating learning effects. Make clear the basic steps of teaching task analysis:write the schema, make sure the contents, analyze the methods and clarify the sequence.According to the new way of designing physical class, there is a teaching plan of "Lenz’s law". Do the teaching experiment in the light of the previous plan. The research proves that the teaching design based on teaching task analysis is better than the traditional teaching design.The interviews of front-line physics teachers illustrate most of the teachers prefer to design teaching plans based on their experience. This means, it can improve the teaching effects if the teaching design based on teaching task analysis is used widely.