And try this wonderfull modern adaptation of the Logo language
It's absolutly marvelous of simplicity for learn to code!

Scratch http://scratch.mit.edu/
and Byob ( Scratch on Steroïds :)
http://byob.berkeley.edu/

You wil be delight with them !

Have fun with it!
And of course cool colored rosaces can be made with them ;)

Look this little cool one ;) (let prefer the Flash version than the Java version)
http://scratch.mit.edu/projects/MikeKucinski/2437192
Possible functions listed on the right vertical text

And here the code funny is not it? ;)
By Mike Kucinski


And another one http://scratch.mit.edu/projects/MikeKucinski/2436613

3 page of colorfull scripts ;)
http://scratch.mit.edu/users/MikeKucinski