Sample graphs:
Favorite Sports to Compete in: http://teacher.scholastic.com/kidusasu/favsport/resfsc.htm
Favorite Sports: http://teacher.scholastic.com/kidusasu/favsport/resfsw.htm
School Uniforms by Color: http://teacher.scholastic.com/kidusasu/uniforms/chart3.htm
CyberChase-Game with graphing http://pbskids.org/cyberchase/math-games/bugs-in-the-system/
Creat your own graph! http://nces.ed.gov/nceskids/createagraph/default.aspx