Junior High School Physical Optics Of Typical The Former Concept Of Investigation And Guide Strategy

Optical chapter of the junior middle school physicsteaching material，For the high school physics learning fromthe thought, methods, habits and bedding。And study how to helpstudents correctly understand and firmly grasp the concept ofoptical appears very necessary. The former concept is one ofthe important factors affect the concept to build correct.Former concept refers to the learner before accepting formalscientific education through long-term experience in dailylife and get some perceptual impression. How many there are somestudents in mind optical concept, The former concept, Someformer concept does not conflict with the concept of science,Can be used as a new growing point of knowledge, But some formerconcept tends to be one-sided, lack of scientific, even is wrong.This article, by means of the self-made questionnaires combinedwith interviews to "light","light transmission way", theunderstanding of the "light physical space","whether you needlight propagation time","reflection of light","therefraction of light","flat mirror imaging characteristics",the understanding of the concept of "real image and the virtualimage" and "convex" shapes the understanding of thecharacteristics of several typical knowledge to carry on the survey,And won’t accept scientific concept learning of thestudents which exists in the mind of a typical before theconcept of information;At the same time, Based on Piaget’scognitive theory, constructivism learning theory, theory andconcept transformation model based on the thinkingcharacteristics of physics learning in junior high schoolstudents should follow the teaching principle of guidance forwriting,From the following two aspects to study and put forwardthe targeted teaching strategies: First, before the concept ofpositive transfer function to strengthen the concept oflearning; Second, the transformation error before concept topromote the concept learning.