I'll bet you can't stump Dr. Math! This doctor is really a team of Swarthmore graduate students on-line to answer your e-mail about math at http://mathforum.org/dr.math/ Sure, you can ask about decimals, algebra and long division, but can these electronic tutors answer questions about math facts and trivia, like who invented the plus sign? And why we need fractions? And who invented math, anyway? Of course. If you're frustrated, don't give up. Try Dr. Math, who always has time and is always ready with an e-smile. When you ask for help on your own stumper, take a second to read other que stions and answers. You may find help you didn't even know you were looking for!