Currency Exchange: Money Matters
When we travel, it's harder to know if we're getting a good deal because we use currencies other than the dollar. Converting from dollars to other currencies is not as easy as the other conversions because the exchange rate (the value of a dollar compared to other currencies) changes all the time. You can convert your dollars into any currency for anywhere in the world. You'll find information such as: On Sunday, October 8, 2000, 1 U.S. Dollar = 108.880 Japanese Yen or 1 Japanese Yen (JPY) = 0.009193 U.S. Dollar (USD). What is the Dollar worth compared against the Yen today
Currency Converter
http://www.oanda.com/converter/classic

Artistic Math: Tessellations
What is a tessellation? A tessellation is any repeating pattern of interlocking shapes. M. C. Escher made this art form famous. Visit the Totally Tessellated Web site. A ThinkQuest Web site that was created by students will give you a comprehensive introduction to tessellations and explain the basic math that is used in creating them. You'll also be able to browse through many examples of tessellations in real life.
Totally Tessellated
http://library.advanced.org/16661