The Influence of Mental Capacity and Understanding of the Oxidation-Reduction Concepts on Senior and Science High School Students’ Completion of the Balancing Redox Equations

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(1)Journal of the Korean Chemical Society 2002, Vol. 46, No. 4 Printed in the Republic of Korea.

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(3) (2002. 5. 21 ) †. The Influence of Mental Capacity and Understanding of the OxidationReduction Concepts on Senior and Science High School Students’ Completion of the Balancing Redox Equations Byung-Soon Choi*, Chung-Ho Kim†, and Sang-Kwon Lee Department of Chemistry Education, Korea National University of Education, Chungbuk 363-791, Korea † Sungan Senior High School, Kyonggido 425-171, Korea (Received May 21, 2002). .

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(19) +o pq. kl] e -%G Yirs4 t E^F. : , , !, ! '( ABSTRACT. The purpose of this study was to analyze the influence of mental capacity and understanding of the oxidation-reduction concepts on the completion of the balancing redox equations. Participants were 92 senior high school students and 57 science high school students. Tests were conducted to measure the mental capacity, the understanding of the oxidation-reduction concepts and the completion of the balancing redox equations and the influence on the performance was analyzed. The performance of the senior high school students increased as the mental capacity increased, but the performance of science high school students did not change by mental capacity. Most of senior high school students couldn't understand the oxidation-reduction concepts well. Most of science high school students, however, understood the concepts completely and partially. The students who had a good understanding of the oxidation-reduction concepts showed a good performance for both senior and science high school students, regardless of the problem pattern. Keywords: Mental Capacity, Oxidation, Reduction, Balancing Redox Equation. 345.

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(84) . 348. Table 2. Distribution of the understanding of the oxidation-reduction concepts (the number of students) School Senior high school, % Science high school, %. Degree of Understanding Redox Concepts No. Little. Partial. Full. 66.3(61) 3.5(2). 17.4(16) 10.5(6)0. 10.9(10) 15.8(9)0. 5.4(5) 70.2(40).

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(172) ú ~F.. 1. Herron, J. D. In Toward a Scientific Practice of Science. Education; Gardner, M.; Greeno, J.; Rief, F.; Schoenfeld, A.; diSessa, A.; Stage, E., Eds.; Erlbaum: Hillsdale, NJ, U. S. A., 1990; pp. 31-54. 2. Pascual-Leone, J. Acta Psychologica 1970, 32, 301. 3. Pascual-Leone, J. International Journal of Psychology 1987, 22, 531. 4. Burtis, P. J. Journal of Experimental Child Psychology 1982, 34, 387. 5. Niaz, M. Journal of Chemical Education 1987, 64, 502. 6. Niaz, M. International Journal of Science Education 1989, 11, 93. 7. Niaz, M.; Robinson, W. R. Journal of Research in Science Teaching 1992, 29, 211. 8. Johnstone, A. H.; Hogg, W. R.; Ziane, M. International Journal of Science Education 1993, 15, 663. 9. Choi, B. S.; Kim, K. H. Chemical Education 1996, 23, 18. 10. Ahn, S. Y.; Kwon, J. S. Journal of the Korean Association for Research in Science Education 1996, 16, 134. 11. Choi, B. S.; Yeo, W. K. Chemical Education 1997, 24, 57. 12. Opdenacker, C.; Fierens, H.; Van Brabant, H.; Sevenants, J.; Spruyt, J.; Slootmaekers, P. J.; Johnsone, A. H. International Journal of Science Education 1990, 12, 177. 13. Niaz, M. International Journal of Science Education 1995, 17, 343. 14. Nurrenbern, S. C.; Pickering, M. Journal of Chemical Education 1987, 64, 508. 15. Garnett, P. J.; Treagust, D. F. Journal of Research in Science Teaching 1992, 29, 1079. 16. De Jong, O.; Acampo, J.; Verdonk, A. Journal of Research in Science Teaching 1995, 32, 1097. 17. Butts. B.; Smith. R. The Australian Science Teachers Journal 1987, 32, 45. 18. Niaz, M.; Lawson, A. E. Journal of Research in Science Teaching 1985, 22, 41. 19. Chandran, S.; Treagust, D. F.; Tobin, K. Journal of Research in Science Teaching 1987, 24, 145. 20. Pascual-Leone, J.; Ijaz, H. In Massessment and Placement of Minority Students; Samuda, R. J.; Kong, S. L.; Cummins, J.; Pascual-Leone, J.; Lewis, J., Eds.; Intercultural Social Science Publications: Toronto, Canada, 1989; pp 143-171. 21. Niaz, M. International Journal of Science Education 1988, 10, 231.. Journal of the Korean Chemical Society.

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