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An Analysis of Conception Types of High School Students, Chemistry Teachers, and Pre-service Science Teachers about Salt Bridge of Daniel Electronic Cell  

Park, Jin-Hee (Gu Am High School)
Kim, Dong-Uk (Daegu University of Education)
Paik, Seoung-Hey (Korea National University of Education)
Publication Information
Journal of The Korean Association For Science Education / v.24, no.3, 2004 , pp. 544-555 More about this Journal
Abstract
This study examined the conception types of high school students, chemistry teachers, and pre-service teachers about the salt bridge in Daniel cell by a questionnaire and follow-up interviews. High school chemistry II textbooks were analyzed for finding the cause of the understanding difficulties of the teachers and students. Pre-service teachers' thoughts examined for the problems of pre-service teacher programs. From the analysis, it was found that teachers only thought that the role of salt bridge is for ion movement of two solutions involving electrodes. But they didn't have the conception that salt bridge has a roll of connection a circuit. This result was similar to students' and pre-service teachers' results. It was possible that insufficient and different explanations of the textbooks were attributed the teachers' and students' conceptual difficulties.
Keywords
daniel cell; high school chemistry teacher; pre-service teacher; high school student; salt bridge; misconception; closed circuit; movement of ion;
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