A Study On Instruction Design Of Eletric Field Conception In Senior Middle Schools

Field is an important concept, while electric field, electric intensity, electric potential are basic, important, difficult concepts in electromagnetism. Being short of perceptual knowledge, many students think that these concepts are abstract. At the same time, many misconception are rooted in students'thoughts. The physics teaching can not go on wheels. It is time to explore effective instruction strategies to improve on field concept-teaching.Questionnaire and interview are used to anatomy the teaching actuality, probe into the research oriention, research contents and not-contents about electric field. Pre-questionnaire and post-questionnaire having been put into practice in three senior middle schools'students in Guangxi Yulin, having interviewed many students of Ming-shan senior school in Yulin, I analysed the student'pre-comprehension and post-comprehension by education statistics and knew some misconcepts'origin, cause, character about electric field. Based on pedagogy theory and teaching practice, I designed two contrastive conception-teaching models on electric field, electric intensity, electric potential and tested in random two classes in Ming-shan senior school. Inquring teaching mode is carried in the experimental class, while traditonal mode in another class.In the experimental class, physics experiments, simulant maps, causal maps, thought experiments, multimedia technology were applied to creat inquiring situation and the teacher adjusted the teaching orders, reduced the difficulty to help the students self-construct the concept and inquire the corporality of electric field. Analysed and compared the two teaching modes, the conclusion is: the difference of students'academic achievement between the two classes are distinct(|Z|>1.96). Inquiring teaching can improve the students'academic achievement. The research proved that inquiring teaching can buildup the students'study interest, enhance the students'ability, teachers and students must attach importance to the corporality of electric field.The research also confirmed that teaching staffs must discover the misconception in students'thought in time, introduce strategies to make conceptual change, advance the level of science education, heighten the civil scientific literacy.