Study On The Exploitation And Application Of Chemistry Scientific Inquiry Teaching Cases In Middle School With Digital Experiment

The digital experiment blending in middle school chemical teaching is an inevitable trend.The ranges of the middle school chemical experiments will be widened by application of the digital experiment.The revolutionary influences on middle school chemistry scientific inquiry experiments will be produced.The comprehensive ability of the students will be improved by widely application of digital technology to teaching.The core of digital experiment is to integrate digital technology into the chemical experiment.When the various digital sensors are used to chemical classroom teaching,the decisive transformations will be produced.In this paper,the scientific inquiry experimental cases are exploited by digital technology for further explaining the nature of the experiments and further strengthening the knowledge construction of students,In order to speed up the application of digital experiment in middle school chemistry teaching.The authors of the paper adopted literature method,experimental method and survey method to research and demonstration.The contents of the thesis are summed up in three parts.In the first place,the project backgrounds are illustrated and the digital experiment is defined.The second,the exploitation and teaching application of the digital experiment are involved.Finally,the application effects of the digital experiment are demonstrated and analyzed.The hard core of this dissertation is studied on the exploitation of chemistry scientific inquiry teaching cases in middle school based on digital experiment.The authors illustrate five cases of the digital experiment in this paper.The first is to explore the chemical reactions of aluminum hydroxide mixed with ammonia water by use of digital experiment.The second is to explore the conductivity and turbidity degree of aluminum hydroxide saturated solutions produced using different chemical methods by use of digital experiment.The third is to explore the pH changes of concentration on solutions of both sodium carbonate and sodium bicarbonate.The fourth is to explore the changes of pH after the mixture of hydrochloric acid and acetic acid.The fifth is to explore the chromogenic reactions of phenol with ferric iron ions.Finally,the instructional designs based on theexperimental cases of digital experiment are exploited and studies of the practice and the application.