Bankrate
Bankrate: Disputing a Credit Card Purchase
Discusses how you can dispute making a credit card payment for a defective product under the Fair Credit Billing Act. An article from December 2004.
Discovery Education
Discovery Education: Web Math: Math for Everyone
Provides online programs and explanations on everyday math: calculating a tip at a restaurant, determining the sale price of an item, finding the odds of winning a lottery, computing simple and compound interest, and more.