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Making a Sun Clock - http://www.exploratorium.edu/science_explorer/sunclock.html
Before there were clocks, people used shadows to tell time. Learn how to make your own sun clock! |
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On Time - http://americanhistory.si.edu/ontime/
Learn about the history of time measuring devices in this online Smithsonian Institute exhibit. Page discusses how the accuracy of watches and clocks affected people's perception and usage of time. |
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Industrious Clock - http://yugop.com/ver3/stuff/03/fla.html
Clock using video of a hand drawing to display the time. |
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A History of Time - http://www-history.mcs.st-andrews.ac.uk/HistTopics/Time_1.html
A two-part article that discusses physicist's evolving view of time. |
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Making a Horizontal Sundial - http://www.lmsal.com/YPOP/Classroom/Lessons/Sundials/sundials.html
Learn how to make a sundial. Instructions are for beginners, intermediate, or advanced, and work for either the northern or southern hemispheres. |
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How Stuff Works: Time - http://www.howstuffworks.com/time.htm
Complete five-part explanation of time and how it is measured, including information about clocks, time zones, and calendars. |
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Countdown - http://www.spiders.com/portfolio/demos/countdown/
Calculate the exact time in days, hours, minutes and seconds from now until your birthday or any other event. |
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When Does Daylight Savings Time Occur - http://www.logan.ws/articles/when_does_daylight_savings_time_occur.asp
Explanation of when and why we have daylight savings time. |
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National Geographic Kids Magazine: Water Clock Experiment - http://www.nationalgeographic.com/ngkids/trythis/try10.html
Demonstrates how water clocks can be used to keep time. |
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Latitude and Longitude - http://www-spof.gsfc.nasa.gov/stargaze/Slatlong.htm
Introduction to latitude and longitude, a way of calculating exactly where you are anyplace on earth and a way to tell time. |