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http://dx.doi.org/10.14697/jkase.2011.31.4.587

Analysis of the Ability to Infer the Effects of Variables and Variable-Controlling Strategy in Middle School Students who experienced 'Thinking Science' Activities  

Lee, Sang-Kwon (Chonnam National University)
Paek, Myeong-Hwa (Chonnam National University)
Ree, Jong-Baik (Chonnam National University)
Choi, Byung-Soon (Korea National University of Education)
Park, Jong-Yoon (Ewha Womans University)
Publication Information
Journal of The Korean Association For Science Education / v.31, no.4, 2011 , pp. 587-599 More about this Journal
Abstract
The purpose of this study was to analyze variable-controlling strategy (below vcs) and the ability to infer the effect of variables in Middle school students who experienced 'Thinking Science' activities in a CASE program. For this study, 71 9th grade students experienced in CASE program for 2 years were selected as the experimental group and 72 students were selected as the control group. All students were tested with Science Reasoning TaskVII. The five types of variable-controlling strategy were extracted from students' response. According to the result of this study, the students experienced in CASE program was more successful in the variable-controlling strategy of length, quality, and shape than the control group. The types of reasoning ability of the variable effect intuitively were categorized as possibility of reasoning, impossibility of reasoning, and impossibility of reversible thinking. It has shown that the reasoning ability of the experimental group was higher than that of the control group in the length and thickness variable effect. The results of this study implied that the variable controlling activities in CASE program could be effective for learning variable controlling, and eventually, for the development of reasoning ability of the variable controlling effect. In the ability to infer the effects of variables to get difficult Intuitively, both groups were similar to the rate of cognitive level reached to the formal operation in generalization, and the student of experimental group was 1.5 times faster than the control group.
Keywords
CASE program; cognitive level; control variables; reasoning ability;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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