Research And Development Of High School Virtual Chemical Demonstration Experiment

The new curriculum reforms emphasized the importance of chemistry experiments raising students' innovation spirit and the ability of practice, and strengthened experiment safety consciousness. Virtual chemistry experiment demonstration experiment can effectively expand the scope of the experimental demonstration, and the experimental demonstration of reduced costs and the difficulty of the experiment to the traditional teaching has brought vitality. At present, the virtual presentation of the experimental demonstration of a linear approach limits the ability of divergent thinking of learners against this phenomenon, papers in the Distributed Cognition Theory, Research-based Learning Theory and the constructivist learning theory, under the guidance of the proposed exploratory Virtual demonstration experiment design idea, design, development emotional interaction with a virtual presentation of exploratory experimental system, System based on experiments in the real experimental conditions of the control method, the operation of error-prone students, laboratory notes, or in the real experiment and not because of the danger of the operation to allow students to design the operation of a number of different paths to this study to improve learner interest and ability to explore. In this exploratory presentation of virtual experiments, students according to their cognitive and experimental design to manipulate the path watch the results of the experimental demonstration, the development of the students the spirit of initiative and to explore the real experiment has some guidance and complementary role.Virtual presentation at the exploratory design of experiments made, in accordance with the characteristics of secondary school chemistry, combined with a typical case - the laboratory system of the oxygen experiments, carried out to explore the virtual presentation of the specific experimental system design and development. Thesis introduction, the main problem is the background of the problem, research the status quo at home and abroad, I work and the meaning and organization of paper is introduced.Main thesis is divided into two main parts:The first part is to explore the virtual presentation of the experimental design. First introduced the concept of inquiry, and then combined with the distributed cognition theory, cognitive learning theory, and constructivist learning theory, are discussed to explore the virtual presentation of the theoretical guidance to experiments, but also introduced the classification of the virtual demonstration experiment, and summarize their Virtual presentation of the classification experiment. Finally, the paper in the secondary chemistry of the virtual demonstration experiment to explore the needs analysis and feasibility analysis, focusing on secondary schools to explore the chemical demonstration of the virtual design of experiments and the development of secondary schools to explore the chemical laboratory of the virtual demonstration of the technology and choose method.The second part of the virtual into the development of demonstration experiments. In theory, under the guidance of papers to choose a typical case, the design and development. Include: to explore the contents of the virtual demonstration experiment based on choice and choose a laboratory preparation of oxygen to the significance of the case; Inquiry based on the structure of the virtual demonstration experiment, a detailed analysis of oxygen in the laboratory system into a virtual presentation of the experimental realization of the various modules; through Test-class demonstration experiment to explore the application of virtual practice were evaluated.Finally a summary and prospects, pointing out that this thesis research, as well as inadequate. The main results of paper: theory, in-depth study of virtual reality technology and virtual experiments related to the theory of desktop virtual experiment to re-classified, in order to study the future of virtual experiments provide researchers classified information; Technical aspects, the paper design, development of secondary emotional interaction of the chemical into the virtual demonstration experiment system to enhance the students awareness of the initiative and to explore for other researchers in the development of virtual experiment study to explore the capacity of learners to help and reference.How to design and give full play to the ability of learners to explore multi-media teaching system, computer-assisted teaching system in the future development trend, I hope this study will promote the ability of learners to explore, experiment on the real have some guidance and supplementary role in enhancing the quality of teaching and to provide assistance to other researchers.