Math Problems

Need an idea for a Math fair project? What to try some new Math problems?

For more ideas check out:

http://www2.edc.org/makingmath/mathproj.asp

http://mathforum.org/teachers/mathproject.html

http://www.sciencebuddies.org/science-fair-projects/search.shtml?v=ia&ia=Math

http://www.sfmathcircle.org/index.html