A Case Study Of Developing And Improving Experimental Teaching Aids For Secondary School Physics

Physics is a precise experimental science,and physical experiments are the basis for the formation of physical theories and provide the scientific basis for the establishment of physical laws.Experimental teaching of physics in secondary schools is an effective way to cultivate students' spirit of scientific inquiry,and an effective way to enhance the core literacy of physical science.At the same time,cultivating students' ability to operate and investigate through physics experiments is a very important goal in secondary school physics teaching,so physics experimental teaching is an important part of physics teaching and has an indelible role in daily physics teaching.However,there are many difficulties in teaching physics experiments in secondary schools,on the one hand,most of the current general secondary schools,especially some schools in rural and other economically underdeveloped areas,physics experiments not only have a shortage of teaching instruments and teaching aids and other hardware facilities,and most of their existing teaching aids are of poor quality,slow to update,the damage rate is high,in the specific teaching applications,intuitive is not strong,often difficult to mobilize Therefore,the teaching effect is greatly reduced.On the other hand,for the existing teaching instruments and teaching aids themselves,some of the existing teaching aids have such things as low visibility of experiments,inconvenient operation,inconspicuous phenomena,defects in the structure of the instruments,and even gaps in the experimental instruments in some knowledge areas,resulting in teachers being able to explain only through language or simulation software,thus not fully convincing to students and losing the true nature of experimental teaching.First of all,this thesis analyzes the current research situation at home and abroad from the research background,discusses the current problems in the development and improvement of teaching aids in China,formulates the interview method,observation method and literature research,conducts an in-depth case study of the development process of some excellent homemade teaching aids,gives effective solutions to the problem of topic selection and common problems encountered in the development process of secondary school physics teaching aids,and gives effective strategies for the development of teaching aids.The study also gives effective strategies for solving the problems of topic selection and common problems encountered in the development of teaching aids,and gives some development principles that should be noted in the development of teaching aids.The results of the study,which are enlightening for the majority of teachers to make their own teaching aids,are.Three suggestions are made for the selection of topics:(1)problems are found in teaching,some of the traditional experimental equipment in the teaching of the phenomenon of poor results is not obvious,or assembly is tedious and requires a long time for debugging difficult to make experimental results,or the textbook for other reasons although there are teaching needs but not programmed experiments,or teaching aids or experiments appearing in teaching and theory contradictory can be selected for the start and development of the topic.(2)the use of new technology to improve the original instrument,the use of new technology and components,the development or improvement of experimental teaching aids,so that the experimental effect is more obvious.(3)Reproduce the experiments in the history of science,the classical experiments of scientific predecessors in the exploration to prove some theories,can also be developed as a selected topic to reproduce the experimental process of scientific exploration for students.Second,for the development process of common problems put forward some solution strategies:(1)learning and use of new technologies,with the continuous development of science and technology,new materials and new technologies more and more,such as super capacitors,neodymium ferromagnetic,3D printing,infrared thermal imager and other popular,the use of these new materials to improve the experimental aids will often have good results suggest that the developers of teaching aids to pay more attention to the development of cutting-edge technology,more to participate in science and technology fairs.(2)Do more experiments,ask more questions,in addition to the experimental aids in the textbook can also pay more attention to the design of common utensils in life,and even try to improve common utensils from life to enhance their own hands-on experimental capabilities,and in the process more thinking and more questions,such as "why this design",to enhance their own experimental design capabilities.their own experimental design capabilities.Finally,the author himself summarizes a few points to note about the design of teaching aids Matters:(1)scientific(2)intuitive(3)inquiry(4)safety(5)simplicity and integration.