| Digital experiment system is a new modern experimental technique, including sensor technology and computer technology, which is convenient, intuitive and accurate. Combing with middle school chemical experiment, it gives birth to a new direction for experimental research, renovating the apparatus and methods of chemical experiment and it also expands the content of experiments in chemistry.On the basis of experiment characterization, this paper studied the differences between the digital experiments and the traditional experiments in chemistry. We also summarized the characteristics, advantages and applications of the digital experiment characterization.This paper contains six parts as follows:Firstly, the object, the content and the thread of the research described in the preface. In the second part, we reviewed the digital experiment and the technical research of chemical experiment in middle school, analyzing some problems existing in the digital experiments and the traditional experiments. In the third part, we defined the representation of the digital experiment, summarized the methods, modes and functions in it. In the fourth part, with the mode of representation as the main line, the writer designed six experiments based on the characteristics of the digital experiment. In the fifth part, the writer took some teaching practice with the teaching model of POE. In the sixth part, some conclusions and enlightenments have been simply examined.The conclusions of this research includs:(1) digital experiment characterization can be defined as getting experiment information and present it by using of sensors, data-logger and computers; (2) the character of digital experiment characterization is acquiring rich information and using it efficiently; (3) digital experiment overcomes the weakness of traditional laboratory equipments and makes thoes experiments that can not do through traditional methods easy to conduct;(4) the teaching of digital experiments shows that the experimental characterization of digital features can be accepted by subjects.The researching methods in this article includes literature research experimentation, action research, questionnaire interviewing and other methods. |
