Design Of Process Visualization Micro Experiment And Its Application In Middle School Chemistry Teaching

Chemistry is a natural science based on experiments.Chemical experiments are the most distinctive means in chemistry teaching.Experiments can help students to abstract abstraction and play an important role in promoting students' knowledge and training students' observation.The new curriculum standard clearly states that schools should rationally choose experimental teaching forms and advocates the greening of experiments and encourages the development of micro-experiments.The new curriculum standard requires students to have the ability to carefully observe and record experimental phenomena,to analyze experimental phenomena,to reflect on the experimental process and results.However,there are the following problems in the current teaching of chemistry experiments in middle schools.Firstly,students and teachers value the results of the experiment,not the experimental process.Secondly,the experimental phenomenon is not obvious.Thirdly,the amount of experimental drugs is large,the waste is difficult to handle,and it is not environmentally friendly.Fourthly,the time cost of conducting experiments is high.Finally,conditions in some areas are limited and the experimental development is not satisfactory.Combining micro-chemistry experiments with process visualization technology,this thesis develops classroom demonstration experiments,student group experiments and small family experiments,providing teachers with a new teaching method and offering students with a new method of observation experiment.This paper solves the problem that the experimental phenomenon in the church is not clear and the reproducibility is poor.By improving the experiment,the students' observation ability is cultivated,and then the students' scientific inquiry and innovative consciousness quality are developed.It facilitates the students' reflection of the experimental process and results.Clear experimental phenomena on the premise of reducing the amount of drugs used.It not only promotes experiments,but also contributes to the students' green chemistry awareness and the miniaturization of green chemistry and chemical experiments.This paper is divided into six parts.First,this paper summarizes the essentiality of conducting experiments in middle school teaching and the development of experimental teaching in China at the present stage.Second,the paper introduces therelated concepts of process visualization micro-experiment and the theoretical basis of experimental improvement.Third,the investigation and analysis of the status of chemical experiments in the four middle schools in Yantai were conduct.Fourth,the principle of design improvement of process visualization micro-experiment is put forward,and some chemical experiments in the textbooks of junior high school and high school PEP editions are explained.In addition,we selected the experimental content suitable for process visualization and miniaturization for improvement.Fifth,the applied process visualization micro-experiment applied in the classroom,and it put forwards the application strategy of process visualization micro-experiment.Last,it summarizes the research conclusions of this paper and puts forward the prospect of the development of process visualization micro-experiment.