Research On The Micro Chemistry Experiment Of Middle School Green Chemistry Concept

With the progress of science and technology and the development of society,various kinds of environmental pollution have come quietly,and the miniature chemistry experiment based on the concept of green chemistry has emerged,which is known as "the revolution of chemical experiment ".In order to fundamentally solve the harm of environmental pollution,it is necessary to strengthen the education of the green ideas for all students and people,especially to vigorously promote miniature chemistry experiment(ML)in secondary school.In recent years,China attaches great importance to the research and application of miniature chemistry experiment,and the state has successively promulgated the compulsory education curriculum standard and the general high school chemistry curriculum standard,which opened the door for miniature chemistry experiment to enter the middle schools.Because the green miniature chemistry experiment can not only overcome the disadvantages of the conventional experiment,but also help to improve the students' core literacy about chemistry,it is the general trend to carry out the research and promotion of the middle school miniature chemistry experiment based on the concept of green chemistry,and it is also the hot spot of the middle school chemistry experiment teaching at present.In this paper,the experimental miniaturization and its implementation in middle school chemistry textbooks are studied.Firstly,the concept,research purpose,significance and methods of miniature chemistry experiment based on the green idea are introduced by consulting literature,and the development of miniature chemistry experiment at home and abroad,and the necessity of implementing miniature chemistry experiment teaching in middle school is put forward.Secondly,the questionnaire survey and analysis of 6 middle schools in this area have found that there are many disadvantages of conventional experiment and few opportunities for students to participate in experiment in the current middle school chemistry experiment teaching,too many demonstration experiments are not conducive to the cultivation of students' team cooperation spirit and innovative spirit.There are some main problems,such as low popularity of miniature chemical experiment,insufficient attention and investment.Thirdly,according to the requirements of the 2011th edition of the compulsory education curriculum standard and the 2017th edition of the general high school chemistry curriculum standard for students' experiments,the experiment contents in the middle school chemistry textbook are analyzed,the experiment contents in the middle school chemistry textbook are analyzed,the miniature experiments and experiments that can be miniaturized specified in the textbook are studied and summarized,and eight micro chemistry experiments with green chemistry characteristics are designed.Fourthly,we have done pre-class design,in-class implementation and after-class questionnaire survey on micro-chemistry experiment teaching,and summarized the effect of miniature chemistry experiment implementation.The experimental results show that the promotion of miniature chemistry experiment in middle school not only improves students' learning enthusiasm and practical operation ability,but also cultivates students' group communication and teamwork spirit,and enhance students' awareness of environmental protection and innovation.At last,the thesis is summarized,and four suggestions and prospects are put forward on how to implement the experiment teaching of miniature chemistry in middle school.