Water bottle Rocket - Do it yourself

http://exploration.grc.nasa.gov/education/rocket/BottleRocket/about.htm

http://exploration.grc.nasa.gov/education/rocket/BottleRocket/about.htm

http://www.bbc.co.uk/bang/handson/waterbottlerockets.shtml

http://www.bbc.co.uk/programmes/articles/2MfJ5Gydv3gP6W3Ff67vd0b/hands-on-science

http://www.thisoldhouse.com/toh/how-to/intro/0,,20258045,00.html