| Physics concepts before international physics education research has become animportant research topic. From today’s emphasis on teaching "teacher talk based" to"student-learning-based" reform, students can use their own context, collaboration,conversation and other learning environments to achieve meaning construction of newknowledge. Constructivism holds that scientific concepts taught alone is not enough,science is based on the original concept of the learning experience in conceptual changelearning.This study conducted an empirical study on the related concepts and problems inteaching simple circuit structure was found in middle school electricity, not to studyelectrical students in the lamp after investigation; the length of the wire current size; circuitin the light of a sequence; current through the bulb will weaken the existence of preconcept. Junior high school students have learned in short circuit, electrical current meter,voltage meter, there are still many mistakes; current, voltage regulation in the real recordlevel, not in the new situation of flexible application errors concept.In order to change the students before the concept of effective, in this study, thecauses of pre concept analysis based on the combination of teaching theory, and putsforward the teaching strategy: establish constructivist teaching consciousness to theteachers, to understand the concept of students; the physics experiment, multimedia,analogy and other situational teaching by understanding of the concept of cognitiveconflict and help students; cooperation learning, learn from each other, fully understand theconcept; through random access to strengthen and consolidate the scientific concept.Design and practice of teaching related to the proposed scheme, and timely test and delayed test for students. By comparing the experimental classes and control classesshowed very significant difference in the rear, fully verify the effectiveness of this strategy. |
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