What can YOU do?

• Do you have a bike with gears? Count the number of teeth on the different gears and see how that relates to how fast the back wheel spins when you pedal.
   
  
• If you were shopping for a new bike what features would it have? Design the ultimate bike and think about things like wheel size, distance between wheels and weight.
   
  Go to Be On DFTV or to the DFTV Boards, and tell us about your science investigation.