Development And Application Of Teaching Cases Of Middle School Chemistry Micro-courses With Virtual Chemistry Experiments

The chemical experimental course is an important part of the chemistry course.Through the experiment,students can visually observe the changes of chemistry,combine theoretical knowledge to further understand the changes in the micro world,cultivate students' scientific inquiry ability,and enable students to obtain the chemistry foundation required for further learning and development of basic chemical knowledge and skills.However,the setting of chemistry experiment courses is uneven during the actual process of teaching,which cannot meet the needs of current chemistry teaching.However,the micro-learning is match with the concept of new course reforms.Students can combine their own learning conditions and characteristics to watch and browse the knowledge content of the micro-learning through mobile terminal devices,carry out personalized and autonomous learning,and cultivate self-learning ability.In addition,the new curriculum reform emphasizes the need to accelerate the pace of education informatization,promote the deep integration of subject curriculum and information technology,and apply modern teaching methods in teaching.Virtual chemistry experiments provide students with a real world like environment in which the intuitive effects of experiments can be felt from sight and hearing,and have very similar effects to the real world.This can stimulate students' interest in learning,enhance students' hands-on ability,improve their learning efficiency and extend their learning thinking.The combination of micro-classes and virtual chemistry experiments will be another attempt of modern teaching methods.This article is mainly divided into the following parts according to the content of the study: First,through a certain amount of literature research,statistical analysis of the research status of micro-classes and virtual chemistry experiments at home and abroad,combined with micro-classes and virtual chemistry experiments in middle school chemistry teaching application and related research of domestic and foreign scholars on micro-classes and virtual chemistry experiments,determine the research content and methods of the subject.Then based on the " Compulsory Education Chemistry Curriculum Standard ",through the analysis of the subject "carbon dioxide and carbon monoxide",two teaching cases combining micro-classes with virtual chemistry experiments were developed,namely "the nature of carbon dioxide" and "carbon monoxide" teaching case.Through the analysis of the subject of "metals and their compounds",a teaching case of "iron and its compounds" has been developed.The teaching cases of " carbon dioxide" and " carbon monoxide" are used in teaching.Finally,in order to fully demonstrate the effectiveness of the combination of micro-classes and virtual chemistry experiments in improving the quality of teaching and interest in studying chemistry,the results of the two parallel classes were analyzed by software,and the combination of micro-classes and virtual chemistry experiments,compared with traditional teaching,has significantly improved students' chemistry performance and interest in learning chemistry.