数字化实验的表征与教学研究

【作者】 杨飞；

【导师】 马宏佳；

【作者基本信息】 南京师范大学 ， 课程与教学论， 2011， 硕士

【摘要】 数字化实验是集传感技术和计算机技术于一体的富现代气息的新兴实验技术,具有便捷、直观、实时、准确等特点,它与中学化学实验的结合催生了实验研究的新方向,革新了化学实验仪器与方法,拓展了化学实验的内容。本文以实验表征为切入点,研究数字化实验与传统化学实验的不同,数字化实验表征的界定、特点、优势和应用。本文共分为六个部分。第一部分是绪论为本研究问题的提出、研究目的与内容、研究思路。第二部分为数字化实验与实验技术性文献研究,主要回顾并分析了数字化实验、中学化学实验的技术性研究的现状和存在的问题。第三部分是表征理论研究,界定了数字化实验表征,归纳了数字化实验表征方式与形态,总结了实验表征的功能。第四部分以表征方式为主线,运用数字化实验表征的特性设计了6个实验案例。第五部分是运用数字化实验表征特性和POE实验教学模式的教学实践研究。第六部分是研究结论与启示。研究得到以下结论：(1)数字化实验的表征可以界定为利用传感器、数据采集器和计算机进行实验信息的获取和呈现。(2)数字化实验表征的特点在于信息获取种类的丰富和处理的高效。(3)数字化实验对常规实验有质的突破和升华。数字化实验可以大幅度改进传统手段做不出、做不好的实验,变“不可见”为“可见”,由“抓不住”到“抓得住”,将“不好做”转变为“好做”。(4)数字化实验教学研究表明,数字化实验表征特性能为被试所接受,并有助于他们的学习。全文综合采用了文献研究法、实验法、行动研究法、问卷调查法、访谈法等研究方法。更多还原

【Abstract】 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.更多还原