| Circuit diagram has always been applied to electromagnetics of junior middle school. The knowledge related to circuit diagram is an important part of junior school electricity. It is not only the focus of teaching in junior middle school physics, but part of the contents is also teaching difficulty. Under the guidance of diagram teaching theory, the author carried out statistical research on related content of curriculum standards, textbook and the senior high school entrance examination, and conducted a special study on circuit diagram related knowledge in junior school. In addition, the author also conducted a questionnaire survey on part of physics teachers in Suzhou City to understand current teaching situation of circuit diagram. Meanwhile, the author carried out research on the students with oral report so as to understand the present learning situation. Finally, based on the investigation, analysis and theoretical research, the author put forward some specific teaching strategies on the four keys and difficulties, including how to correctly understand and analyze circuit diagram, how to draw the circuit diagram correctly, how to judge and analyze circuit trouble and how to design circuit diagram. Then the author carried out teaching practice in electrics special review of senior high school entrance examination review in the third grade of junior school and received quite good effect. |
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