LOGO-L> How do you make a circular spiral using logo? Help!

["Rohan Dredge" <rgdredge@mypostbox.com>]

  My name is Megan and I am doing my Hons year (n Education) at university
  here in Sydney. I am currently looking at Logo and how it can be used in
  the classroom..
  
  I am trying desperately to work out how do draw a circular spiral using
the
  turtle and I cannot do it! I have tried and tried, but I just can't seem
to
  work it out. Please help me!!!!
  
  I would love it if you could show me how to do this ASAP - thanks heaps!!
  
  Megan.

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