Affiliation:
1. Dokuz Eylul University, Turkey
Abstract
In this research, the comprehension levels and misconceptions of university students on the subject of molecular geometry were determined via a two-tier diagnostic test consisting of 25 items developed by researchers. It was applied on 110 university students. The reliability and validity tests and item analyses were conducted in relation to the test, and the difficulty and discrimination indices of the items were detected. The reliability coefficient of the test was found to be 0.856 while the mean difficulty value of the test was 0.487. According to the findings obtained from the second tier of the test containing open end questions, the students had a great deal of wrong information and numerous misconceptions in relation to the molecular geometry. Such statements as “atoms move in the resonance structure” and “bond angles of two molecules having a trigonal pyramidal shape cannot be different” are counted among the most important misconceptions determined in the study.
Key words: Misconception, molecular geometry, two-tier diagnostic test, university students.
Reference70 articles.
1. Anderson, D. L., Fisher, K. M., & Norman, G. J. (2002). Development and evaluation of the conceptual inventory of natural selection. Journal of Research in Science Teaching, 39 (10), 952-978.
2. Ayas, A., & Demirbaş, A. (1997). Turkish secondary students’ conception of introductory chemistry concept. Journal of Chemical Education, 74 (5), 518-521.
3. Azizoğlu, N., Alkan, M., & Geban, O. (2006). Undergraduate pre-service teachers’ understandings and misconceptions of tier equilibrium. Journal of Chemical Education, 83 (6), 947-953.
4. Bernhisel, S. M. (1999). Measuring preservice and in-service biology teachers’ understanding of selected biological concepts. (Doctoral Dissertation). Utah State University, Utah.
5. Birk, J. P., & Kurtz, M., J. (1999). Effect of experience on retention and elimination of misconception about molecular structure and bonding. Journal of Chemical Education, 76 (1), 124-128.
Cited by
6 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献