The Junior School Physics Preconcept Function Research

The form of physics knowledge in middle schools steps from life and nature .Middle school students have a lot of life experience, which includes lots of penomena and questions related to physics .The characteristics of both students and physics in middle schools decide that the emotional experience which student have will certainly bring great influence in physics teaching in middle schools .At present ,educational circles prefer to think the conceptions before class brought bad effect on teaching .It may be the inference on one respect from conceptions before class .In fact ,the middle school students with a wide horizon get higher marks than the informed students in physics teaching .This research aims at level of pre-concept by doing quenstionnires about students' knowledge and experience .Before class ,and by testing the results of students' studies with different levels of conceptions before class .They prove the correctness of this experience conclusion in teaching .They show conceptions before class are really playing an active role in physics teaching in middle schools.The argument can be reasoned by the theory of knowledge's construction. Conceptions before class are playing an active role in physics teaching in middle schools and are also important for the development of unintelligence .In the practice of physics teaching in middle schools ,teachers get conceptions before class to play an active role in learning to improve the teaching effects by the ways of creating situations ,physics models and analogies.