See Our Classroom String Art Pictures Page!
A good website to learn about string art is this http://en.wikipedia.org/wiki/String_art
String art is a pattern of string it takes a lot of measuring and math to do it. Her is a couple photos on string art.
published by: elliott r heroux 
Other String Art pages can be found at:
http://www.stringart.com/Representational/RepresentIndex.html
http://www.mathcats.com/crafts/stringart.html
http://www.stringthreadart.com/
The last one is the page used a lot by our class.