Research On The Influence Of Digital Experiment On Students' Concept Change

Conceptual change is the process of being perfect, adjustment and reconstruction when people’s original understanding is affected by the new experience. It is one of the most difficult problems in science education field during recent twenty years. The nature of chemistry lead to the concept originated from chemical facts. With the advantage of data acquisition and presentation, Microcomputer-Based Laboratories (MBL) could breakthrough human sensory limitations. It provided the technical support for promoting students’ conceptual change by the research of chemical experiment teaching.The study selected the "ionic reaction" knowledge as the entry point. It integrated related theory by literature research and comparison method, carried out the experiments design and teaching practice through experimentation, action research and MBL. We used the Two-Tier tool is to test students’ conceptual understanding so as to judge if MBL would be able to promote students’ chemistry conceptual change.This paper contains six parts as follows:Firstly, the problems, the contents and the methods of this research were described in the preface. In the second part, we reviewed the domestic and foreign development of MBL and conceptual change theory. Thirdly, I compared the scientific development and learning process of "ionic reaction" knowledge, analyzed the differences between the chemistry textbook (compulsory one) of Jiangsu Education Press and People’s Education Press. In the fourth part, with the concept about ionic reaction as the principle line, the writer designed three experiments and concluded its characteristics. After that, the writer took some teaching practice with MBL. In the sixth part, some conclusions and enlightenments were simply examined.Here are the conclusions of this research:(1) The MBL in chemistry about "ionic reaction" knowledge which the researcher planed could promote students’ conceptual change. (2)The experiments used in this research had a certain effect about their conceptual change on students who are in different cognitive levels. (3) Students with different experimental abilities would harvest differently from the MBL.The author also proposed some suggestion about how to make full use of MBL to advance concept change, and reflected on the insufficient of this research.