| Ivars Peterson's MathTrek |
| 1. A | 2. A | 3. B | 4. B | 5. A | 6. B | 7. B | 8. C | 9. D | 10. C |
Round 2
| 1. negative | 2. positive | 3. positive |
Round 3
"ZERO TIMES ANYTHING IS ZERO."
Comments are welcome. Please send messages to Ivars Peterson at ip@sciserv.org.
Ivars Peterson is the mathematics/computer writer and online editor at Science News (http://www.sciencenews.org). He is the author of The Mathematical Tourist, Islands of Truth, Newton's Clock, Fatal Defect, and The Jungles of Randomness. He also writes for the children's magazine Muse (http://www.musemag.com) and is working on a book about math and art.
NOW AVAILABLE: Math Trek: Adventures in the MathZone by Ivars Peterson and Nancy Henderson. For children ages 10 and up. New York: Wiley, 1999. ISBN 0-471-31570-2. $12.95 USA (paper).