Exploration And Conversion Of Friction Conceptions Of Senior High School Students

Rapid socio-economic development and the challenges facing an unprecedentedadvances in science and technology education, States in order to meet the challengesof education reform to nurture people adapt to the demands of the new era. In the fieldof science education, on the teaching of scientific concepts, increasing people’sattention, because scientific understanding is the concept of access to scientificknowledge and further enhancing the scientific quality of the basic premise, howeverstudies have shown that students’ knowledge has many one-sided, different from theunderstanding of scientific concepts, we call the concept of myth, myth not conduciveto student learning of the concept of the existence of the concept. Therefore, we payfull attention to the students in the teaching of science concept of myth, and usingappropriate teaching strategies to promote students’ conceptual changes. Friction istextbook of focus content one, is students easy produced fans thought concept ofdifficulties one, based on above causes this article for has "high school studentsfriction fans thought concept of probes and change research", expectations byresearch mining out students of typical fans thought concept, and made correspondingof teaching policy to avoid or change fans thought concept, around this a topics, mainfor has following several part of work.First, using literature law collected and finishing of about fans SI concept andconcept changes of related literature, on concept changes of research status and basictheory for summary of; second, through literature, and interview, design about frictionof II paragraph type select questionnaire, on students for test; last, according toquestionnaire of analysis results, combined zhiqian for of about concept changes andtheory based of summary of, made corresponding of teaching policy.Research results indicates that students General has of fans SI concept has:friction is a role effect, not real of force; objects do uniform motion, is a balance State,was of is static friction; friction is objects of a inherent property, just Dang not byforces Shi reflected not out friction to; property block in ground Shang movement Shi,property block was of is moving friction, ground was of is static friction; friction isobjects gravity of a performance way; Relative movement or relative movement trendof reference of is ground or fixed not moving of objects; objects was of friction is awill value, dang forces is less than this force Shi, objects keep still, at this time was ofis static friction, dang forces is greater than this force Shi, objects was of is movingfriction; moving friction of size and objects of speed, and contact area and gravity, into is proportional to the; moving friction and speed into is inversely proportional to,is because friction large so speed only small; friction of direction and by by forcesdirection instead; friction is is power There or not is determined by forces, don’t knowand exercise related to stacked together two objects when acceleration or speed of thesame, be sure there is no friction between them; don’t know what standard of judgingresistance and dynamic relationship between force and displacement in the directionof direction is, and think the friction is the resistance.According to the survey results, raised teaching strategies to promote conceptualchange of friction: the reason behind the concept of myth, building real-worldcognitive conflict; improve the students the basics of system; improve the concept topromote students’ cognitive adaptation to use concept maps to promote students’understanding of the knowledge system of friction.