Session:
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Post-deadline Abstract (Paper)
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Paper Type:
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Contributed
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Title:
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Making Sense of Y-intercepts in Introductory Laboratories
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Meeting:
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2015 Winter Meeting: San Diego, California |
Location:
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N/A |
Date:
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Time:
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4:10PM
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Author:
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Bradley S. Moser, University of New England
8607963010, bmoser@une.edu
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Co-Author(s):
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James Vesenka
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Abstract:
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Modeling instruction methods emphasize paradigm discovery labs that encourage students to invent physical models themselves instead of relying on textbook equations. The key component of each lab is the "linearization" of data collected in order to answer the problem statement "How does Y depend on X?" Students determine the physical meaning of the slope, either through deduction or by defining new quantities. The slope is typically of great importance while the y-intercept is negligible or merely an initial value of the dependent variable. What if, however, the experimental scenario was rich enough to support a y-intercept just as meaningful as the slope? Then a laboratory could host multiple opportunities to hone the art of sense-making. In this talk, we will highlight various paradigm experiments, each with a meaningful and physically interesting y-intercept, such as buoyancy, standing waves, static equilibrium, and Newton's second law.
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Footnotes:
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None
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Presentation:
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AAPT 2015 winter meeting - Session IA05 - Moser.pdf
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