التفاصيل البيبلوغرافية
| العنوان: |
Building Functional Models: Designing an Elbow. |
| المؤلفون: |
Penner, David E., Giles, Nancy D., Lehrer, Richard, Schauble, Leona |
| المصدر: |
Journal of Research in Science Teaching; Feb1997, Vol. 34 Issue 2, p125-143, 19p |
| مصطلحات موضوعية: |
SCIENCE education, ELBOW, MODELS of surfaces, EXPERIMENTAL design, SCHOOL children, ROTATIONAL motion, KINEMATICS, MECHANICAL movements, DRAWING, CARDBOARD |
| مستخلص: |
The article presents information on a study that examines the role of a design context for developing children's understanding of science as the construction and revision of models. Students were given a design task to build a model that works like their elbows, and were asked to develop one or more solutions to that task. The first model was a drawing of a human arm with an arrow pointing to the elbow. The second model preserved the surface appearance of the human arm and elbow to a lesser extent than did the drawing, but did include a limited degree of motion. The third model was a flexible straw. This model bore a small degree of surface similarity to a real elbow, but more importantly, it captured the flexibility of an elbow and thus fell more toward the functional end of the continuum. The final model was a flat piece of posterboard that had been folded in half to simulate the upper and lower portions of an arm. The ideas held by middle and some high school students seem to be the same as those held by our nonmodeling second graders. They shared a propensity to evaluate models by assessing their perceptual similarity to the phenomenon of interest. |
| قاعدة البيانات: |
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