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[Grade 3 Chapter 9 Math World]

Measurement and Time Around the World

Internet Links

Following are links to Internet resources that can be used to support instruction of the Math World feature for this chapter.

A Walk Through Time
This marvelous Web site describes and illustrates the ways people have measured time throughout the ages, from ancient stone calendars to modern atomic clocks. The National Institute of Standards and Technology created and hosts this site.
http://physics.nist.gov/GenInt/Time/time.html

How Roman Numerals Work
This page gives examples of the rules. There is a link to a Roman Numeral to Arabic number converter.
http://home.hiwaay.net/~lkseitz/math/roman/numerals.shtml

The Maya Astronomy Page
Check out this fascinating site on many Mayan achievements. You can explore the Mayan calendar. If you have a Java-enabled browser, you can convert any date into the Mayan calendar date. This site also features information on Mayan mathematics, writings, and astronomy.
http://www.astro.uva.nl/michielb/maya/astro.html


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