Research On High School Chemistry Virtual Experiment Teaching To Improve Experimental Design Ability

The ability of chemical experiment design is a kind of ability for students to solve practical chemical problems according to their existing knowledge and experience.In2018,every part of the new chemistry curriculum standard issued by our country requires students' experimental design ability.Therefore,the cultivation of chemistry experiment design ability has become an indispensable part of chemistry teacher's experimental teaching.The current research on the training strategy of students' experimental design ability is mainly based on the guidance of teachers.However,as a kind of student's ability to solve practical problems by means of appropriate methods and means,students can design solutions to practical chemical problems independently.With the rapid development of science and technology,virtual experiments began to appear in the field of education,and many studies have shown that the application of virtual experiments in middle school chemistry teaching has the advantages of arousing students' interest in experiments,making up for the lack of real experiments,and cultivating experimental inquiry ability.However,few studies have explored the effectiveness of virtual experiments in improving the design ability of chemical experiments.This study provides a loan for the improvement of students' ability of chemical experiment design by analyzing the chemistry experiment project suitable for virtual experiment in curriculum standard and textbook,investigating the views of middle school chemistry teachers on virtual chemistry experiment,summarizing the teaching strategy of high school chemistry experiment which improves the ability of experiment design with virtual experiment,carrying out teaching practice and testing teaching effect.The specific research path is: first of all,the literature method is used to sort out the current research situation of chemical experiment design ability and chemical virtual experiment at home and abroad,and determine the research side of this study.Secondly,using the text analysis method to analyze which experimental items in the high school chemistry experiment teaching can use the virtual experiment assistant teaching,also can be used as the reference for the future middle school chemistry teacher to apply the virtual chemistry laboratory to the middle school chemistry experiment teaching.Then,a questionnaire was compiled to analyze the application trend of virtual experiment in chemistry experiment teaching.Then,according to the results of literature analysis,the experimental content of the textbook suitable for virtual experiment combing the results and the results of the questionnaire design to improve the experimental design ability of virtual experimental teaching program and pay the teaching.Then,by designing the evaluation scale of the experiment report,we analyze the students' experimental design ability level such as after carrying out the virtual experiment teaching.Finally,compare the students' pre-test results to analyze the teaching effect.The findings are as follows:1.The implementation of virtual experimental teaching can improve students' performance.2.The main aspects of improving the ability of experiment design in virtual experiment teaching are as follows :(1)making clear the purpose and principle of experiment;(2)choosing the appropriate experimental medicine and instrument;(3)designing complete experimental operation steps;(4)recording the experimental phenomenon clearly and analyzing the experimental conclusion.3.The virtual laboratory can only serve as a helpful aid,and it can not improve the students' experimental operation ability.