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Forces on the Human Molecule
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In this physical activity, two lines of learners link hands and arms to model a beam subject to various loading schemes.
Water Ways
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In this activity (on page 2 of the PDF), learners explore surface tension by adding pennies to cups which are "full" of plain water or soapy water.
Levity Through Tension: Fun with Water's Surface Tension
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This experiment describes how to create a "dribble bottle" which only leaks water when the cap is unscrewed. The full water bottle has a small hole made with a push pin.