Exploration And Application Of Micro-scale Laboratory In High School

Chemistry experiment is an indispensable part of middle school chemistry course,which educational function can not be ignored.With the advancement of the new curriculum,the teaching of chemistry experiment has been highly praised by the educators and affirmated by the frontline teachers.But in the process of chemical teaching the prevalence of experimental status is not optimistic.Due to the experimental equipment,experimental drugs,experimental subjects and experimental funding constraints and many other reasons have caused a single form of chemical experiments,which teachers often demonstrate the main experiment,students can actually operate the opportunity and time is less likely to have the opportunity in the classroom teaching research activities.And in the pressure of college entrance examination,teaching content,task tight,teachers can not waste time talking about experiments,instead of painting experiments without the actual situation of the experiment.Micro-chemical experiments in this case came into being.Micro-chemical experiment refers to chemical experiments carried out in miniaturized instrumentation devices,and its practical use is more than 90% savings compared with the corresponding conventional experiment,with the advantages of less consumption,simple operation,green environmental protection and so on.It's widely used around the world.At present,it will be applied to university chemistry experiment teaching in our country.At the same time basic chemistry education stage is also in full swing for research and development and application.Based on the analysis of the origin and development of micro-chemical experiments,this paper summarizes the design ideas,principles and steps of high-school chemical micro-experiments,and develops and applies them.This paper argues that the development of high school chemistry mini-experiment can be carried out on the basis of classroom teaching,comprehensive activities in the second classroom,and three types of experiments in the family.In the course of theoretical analysis,some high-school chemistry micro-experiment cases are also developed.Based on the discovery of learning theory,constructivism theory and Dewey's pragmatism teaching theory,the author applies the inquiry activity of chemistrymicro-experiment in high school to practical teaching,and continuously improves and optimizes the experiment in student feedback to obtain better experiment effect,promote the development of students' core literacy.