The Preconceptions Research On Several Typical Physical Concept (Mechanics) Of Junior High School

The teaching of physics concepts is not only emphasis but also difficult in middle school physics teaching. According to experience in life the students have their own understanding of a variety of physical phenomena . And formed a number of concepts and regulations contrary to or not the same to the scientific knowledge.The research of Preconception has been very concerned about middle school physics teachers, it also has become an international physics education of the important issues covered.In this paper, Constructivism, cognitive structure of assimilation theory, concept formation and structure of the theory as a guide, use two-stage diagnosis of Investigation do research to preconception of physics concepts about typical of the few (mechanics) concept. Based on the results of the questionnaire ,to understand the distributionOf preconception of physics in the minds of students. Through the students for interviews and statistical analysis, summing up the wrong reasons before the formation of the concept. In addition, on the basis of previous studies .Aggregate the Changes in strategy :Show the problem - exposure preconception by discussing–amendment the original concept - to consolidate the concept of solving new problems. In teaching practice e do experiments referred to the teaching strategies. According to data analysis of the results shows that the concept of change in strategy is superior to the traditional teaching strategies.