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Proportion and fractions with bicycle gears

  • Use the big blue dot to pedal back and forth.
  • Move the blue and red sliders to shift gears.
  1. How does the size of the front and back gear wheels affect the bicycle motion?
  2. Which combination would you use to go fast downhill?
  3. Which combination would you use to climb up a steep
  4. For further reading see http://en.wikipedia.org/wiki/Bicycle_gearing