An Analysis and Improvement of the Experiments for Comparing Properties of a Mixture with a Compound of Iron and Sulfur in the Middle School Science Textbooks 


Vol. 51,  No. 1, pp. 93-100, Feb.  2007
10.5012/jkcs.2007.51.1.093


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  Abstract

이 연구의 목적은 중학교 과학 교과서에 제시된 ‘철과 황의 혼합물과 화합물 성질 비교 실험’의 문제점을 분석하고 개선책을 제시하는 것이다. 이를 위하여 9학년 과학 교과서에 제시된 실험 방법을 분석하고, 교과서에 제시된 실험 방법에 따라 중학교 과학을 담당하고 있는 40명의 현직 교사에게 실험을 수행하게 한 후 문제점을 분석하였다. 자극적인 기체 발생으로 인한 거부감, 자성 비교를 이용한 혼합물과 화합물의 구별 실패 등의 문제점이 개선된 개선 실험과 대안실험을 제시하였다. 제안된 2가지 실험을 10명의 현직 화학 교사와 S중학교 3학년 60명에게 적용한 결과, 제안된 실험은 혼합물과 화합물의 특성 비교에 적합하며 개념 이해에 도움이 된다고 응답하였다. The purposes of this study were to analyze problems in the experiments for comparing properties of a mixture with a compound of iron and sulfur and then to suggest the improved experiments. For this study, the experimental methods in 9th science textbooks described were analyzed and middle school science teachers were asked to conduct the experiment according to the process of the textbook and to point problems of the experiment. Two alternative experiments, which improves the problems of the toxic and provocative experiment and of distinction between a mixture and a compound by magnetic properties, were proposed. The two experiments were applied to the 10 science teachers and 60 students from a “S” middle school. They responded that the experiments were suitable for comparing properties of a mixture and a compound and helpful to understand the concept.

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  Cite this article

[IEEE Style]

K. Park and S. Kang, "An Analysis and Improvement of the Experiments for Comparing Properties of a Mixture with a Compound of Iron and Sulfur in the Middle School Science Textbooks," Journal of the Korean Chemical Society, vol. 51, no. 1, pp. 93-100, 2007. DOI: 10.5012/jkcs.2007.51.1.093.

[ACM Style]

Kyong-Hee Park and Seong-Joo Kang. 2007. An Analysis and Improvement of the Experiments for Comparing Properties of a Mixture with a Compound of Iron and Sulfur in the Middle School Science Textbooks. Journal of the Korean Chemical Society, 51, 1, (2007), 93-100. DOI: 10.5012/jkcs.2007.51.1.093.

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