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KMID : 1059520190630060473
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Journal of the Korean Chemical Society
2019 Volume.63 No. 6 p.473 ~ p.485
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The Differences of Graph Construction of Middle School Students on Daily-life and Scientific Contexts by the Views on the Nature of Scientific Measurement
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Lee Jae-Won
Ryu Go-Eun
Lee Kyu-Yul
Noh Tae-Hee
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Abstract
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In this study, we investigated the differences of graph constructed by middle school students in daily-life and scientific contexts according to the views on the nature of scientific measurement. A test consisting of three similar data sets regarding daily-life and scientific contexts was developed, and administered to 151 ninth graders. They were expected to construct proportional, inverse-proportional, and increasing and become constant form of graphs for each data set. Graphs constructed were analyzed in the aspects of constructing a trend line (types of a trend line, interpolation/extrapolation), selecting axes variables, scaling axes, and plotting points. Analyses of the results revealed that the students with set paradigm tended to construct a curved trend line, while those with point paradigm constructed a broken trend line in inverse-proportional graph questions. In the aspects of interpolation/extrapolation, most students with set paradigm performed both interpolation and extrapolation better than those with point paradigm in scientific context. Most students with set paradigm performed both interpolation and extrapolation regardless of contexts, while the proportion of interpolation of those with point paradigm was higher in scientific context than in daily-life context. In selecting axes variables, scaling axes, and plotting dots, there were no statistically significant differences between set and point paradigms. On the bases of the results, educational implications for improving graph construction skills of middle school students are discussed.
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KEYWORD
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Graph construction, Views on the nature of scientific measurement, Daily-life and scientific contexts
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