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S I T E     R E V I E W
DECEMBER, 1997

A+
A Walk Through Time
http://physics.nist.gov/GenInt/Time/time.html
GRADE LEVEL: 3-12

A CONTENT:
The evolution of time measurement based on the August 1992 Department of Commerce Publication ``A Walk Through Time.''

A+ AESTHETICS:
The site uses colors and graphics to give it a "historic" appearance. The site is divided into six sections, each with a similar layout. Each page of the site uses sketches to enhance the text.

A+ ORGANIZATION:
The home page uses icons to highlight the different sections of the site. Each page provides the same graphic navigational menu at the top and arrows at the bottom so the user can move back or forward within the site.

REVIEW:
This site comes from the National Institute of Standards and Technology (NIST) Physics Laboratory and was designed to present a historic view of the evolution of time measurement. The series begins with ancient calendars and ends with the NIST Time Calibration. Information can also be found here on sun clocks and water clocks, mechanical clocks and quartz clocks, and atomic beam clocks. The site also has information on Greenwich Mean Time and world time zones. Users can also synchronize their computer clock with NIST time. This could make a good lesson plan for math and history teachers studying time measurement. It is also an interesting site for science classes to use as a supplement to other lessons.


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