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http://dx.doi.org/10.14697/jkase.2007.27.1.50

Comparison of 9th Grade Students' Understanding According to Experiments on the "Law of Definite Proportions" in Science Textbooks  

Han, Yu-Hwa (Cheonan Technical High School)
Lee, Min-Sook (Gwangyang Jecheol Middle School)
Paik, Seoung-Hey (Korea National University of Education)
Publication Information
Journal of The Korean Association For Science Education / v.27, no.1, 2007 , pp. 50-58 More about this Journal
Abstract
In this study, students' thoughts were searched according to the types of experiments related to the "law of definite proportions" in 9th grade science textbooks. The most common four types of experiments in textbooks were selected and analyzed for this study. It was found that the experiments needed various preconceptions and complex inferring process by students. But most of the students could not catch the concept understanding desired from the experiments. They just perceived simple observation from their senses. These phenomena were common regardless of types of experiments. These means that the level of preconceptions and inferring process for the interpretation of the experimental data did not match with students' level of thoughts. The goals of the experiments in science textbooks are to increase students' inquiry ability, and to acquire science concepts by themselves from the experiment results. But if the contents of experiments are not suitable to students' understanding level, the educational effects of the performance of these experiments were not positive. Therefore, these experiments need contents revisions for students to acquire the concept related to the "law of definite proportions" by themselves.
Keywords
9th grade; experiment; law of definite proportions; science textbook; students' understanding;
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Times Cited By KSCI : 1  (Citation Analysis)
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