You can't start financial education too early, as helping children understand the value of saving and spending wisely will pay off as they grow. The links below will help you teach your kids these simple lessons.
For older kids (5th - 8th grade), check out the Federal Trade Commission's Consumer & Business Concepts for Kids home on the internet.
While you're surfing the net, take a look at the United States Mint's Educational Tools for students and teachers that can generate interest in coins and U.S. history!
Don't forget Kids.gov, the official kids' portal for the U.S. government. It links to over 1,200 web pages from government agencies, schools, and educational organizations, all geared to the interest of kids.