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Hovercrafts
A tool is but the extension of a man's hand,
and a machine is but a complex tool.
And he that invents a machine augments
the power of a man and the well-being of mankind.
Henry Ward Beecher
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Use these links to find out more about building a hovercraft:
http://media.nasaexplores.com/lessons/03-071/5-8_2.pdf
http://www.innovated.gov.au/Innovated/html/i012.asp?LPID=318
http://www.scienceyear.com/
under11s/index.html?page=/under11s/friction /http://spaceflight.nasa.gov/brainbite/videos/0205
http://pbskids.org/dragonflytv/pdf/RidinOnAir.pdf
http://www.genuineideas.com/
ToyIdeas/balloonhovercraft.htmlhttp://www.exploringminds.ca/
e/students_secondary/creative_genius_program/
short_challenges.html