Exploration And Practice Of Computer-aided Teaching Of Chemical Structure In Senior High School

The new concept and idea of modem education advocates argue that computer information technology should exist in the teaching.Information technology,meanwhile,is emphasized by the new curriculum standard.Students are encouraged to learn with the aid of computer software.A huge of microstructures,like atom,molecule and crystal,are embodied in chemistry curriculum standards of high school,which increase the difficulty of learning.Computer-aided instruction,therefore,is often of critical importance.In this thesis,three chemical softwares were selected to construct micstructure model,and teaching cases were designed on the base of the PEP high school chemistry compulsory 3 and 5.Though practice research and the analysis of results,it was found that the way of macro/micro thinking and the connection of macroscopic-microcosmic-symbol can be established by computer-aided instruction.This will help train the core accomplishment in chemistry and meantime promote diversity of teaching ways.In deed,compare with traditional teaching,computer-aided instruction can create visual microscopic particle and simulate studentslnterest in learning.By comparison with other computer software teaching,the study selected the simple convenience software that is easy to operate.This thesis consists of five parts.Part One.Introduction.It mainly includes the research background,the domestic and overseas research overview,research significance,research methods and research ideas.The research background expounds the need of computer-aided instruction for social development,education reform and high school chemistry curriculum standard reform.The research overview mainly elaborated the current situation of domestic and foreign computer aided teaching.Part Two.Definition on related concept and theoretical discussion.The thesis defines the concepts of computer aided teach,chemical substance structure and chemical substance structure thinking,and explores its theoretical basis of constructivist learning theory,behavioral learning theory,cognitive learning theory and learning motivation theory.Part Three.Application of computer aided teaching of chemical structure in high school.This chapter mainly expounds the construction of computer aided instruction in atomic structure,molecular structure and crystal structure.The distribution of material structure knowledge in the new curriculum standard and application of gnuplot,Gauss View 5.0 and eChem softwares in teaching were described.Part Four.Practice and effect evaluation of computer aided teaching of chemical substance structure in senior high school.I took two classes of the second grade in Yinchuan No.1 Middle School as the research object.Then,the teaching practice and effect evaluation were implemented.Hence,I appraised the credibility and operability of the research.Part Five.Research conclusions.The studied results indicated that it can improve the understanding of microstructures and train the core accomplishment in chemistry by computer-aided-instruction.