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                  Students Compete in Machine Building Contest

   by Elizabeth Lee

   Imagine a complex, whimsical machine that uses a chain reaction to
   accomplish a simple task. It is called a Rube Goldberg machine, and
   high school and college students from across the U.S. are taking part
   in a contest to build one. Middle school students from around the world
   also are invited to compete in an online version of the contest.
   Creating such a machine is anything but simple, as reporter Elizabeth
   Lee found out at one competition at a Los Angeles area high school.
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   [1]http://www.voanews.com/media/video/2527868.html

References

   1. http://www.voanews.com/media/video/2527868.html