The Math Worksheet Site.com
With The Math Worksheet Site you can create an endless supply of printable math worksheets. The intuitive interface gives you the ability to easily customize each worksheet to target your student's specific needs. Every worksheet is created when you request it, so they are different every time.
NCES Kids' Zone Test Your Knowledge
The NCES Kids' Zone provides information to help you learn about schools; decide on a college; find a public library; engage in several games, quizzes and skill building about math, probability, graphing, and mathematicians; and to learn many interesting facts about education.