Study On The Psychological Mechanism Of Transformation Of Junior High School Students’ Concept Of Buoyancy

System in a discipline, students learn a series of concepts andthe relationship between the concept is particularly important,because of their experience and teaching content, will be for aconcept or even false understanding the relationship between therelated concepts, therefore how to examine students the concept ofstructure, the psychological mechanism of concept changesbecome a hot spot in the study of science education.This study adopts the principles of combining quantitative andqualitative model, by means of questionnaire of buoyancyknowledge, for the average grade73students conducted aquestionnaire survey and combined with the results of the surveyon line15students through interviews, we through thequestionnaire survey and the interview results, analysis of theconcept of the students buoyancy structure characteristics andbuoyancy of learning the concept of shift mechanism.This study mainly aimed at the problem is: the buoyancy ofmiddle school students the concept structure has what kind ofcharacteristics and buoyancy learning what concepttransformation mechanism.The results of this research: the student buoyancy characteristics of conceptual structure:1. students buoyancy concept structure, concept of differentialpressure is the pressure knowledge explain the core concept ofbuoyancy.2. concept of density difference is an important hub of studentsbuoyancy conceptual structures.3. floating condition and the contact force balance is studentsbuoyancy conceptual structures in the blind spot.4. In the students the concept of structure, the student tograsp of the concept of vertical and vertical is a part of thedirection of the buoyancy is indispensable.students buoyancy concept transformation mechanism:Logic analysis: the students through the concept, judgmentand reasoning thinking form complete state judgment, problems offeasible solution is put forward, combining with the solution, andassume that try to solve the problems of psychological mechanism.Summary: student contact several related concepts, combinedwith the instance, induces contact, they share with the coreconcept of the concept of form a complete structure.Understand accept: understand accept includingunderstanding, to accept two parts. Understanding refers to thestudents the concept connotation, denotation and source has acomprehensive understanding of; Accept is on the basis of theunderstanding, to include concept in themselves to the concept ofstructure, with the conceptual structures of their form real,meaningful connections.