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									Christmas brain challenge advanced 
									What I did is a Christmas challenge, I will add the copies which I used while doing it because I took them from others contributors and I didnīt want to put them together before I asked for the permission ... :)it takes more or less 1,5 hour there are 3 levels, this one is for advanced students who really love it so much - I am going to do it just after Christmas just as a CHRISTMAS TIME STUFF ..... enjoy 
									
										
										
										 Level:advanced 
										
										 Age: 12-17
										
										  Downloads:61 | 
										
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									Copyright 19/12/2009  grikoga 
									Publication or redistribution of any part of this 
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									copyright owner.
  
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