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GRAVITY: http://www.mhschool.com/science/2008/student/na/scienceinmotion/Common/SIM.html?Module=../Grade1/Chapter11-GravityAtWork/ PARACHUTES: [...]
science websites [air & aerodynamics and flight]
February 25, 2011 -
Nasa for Kids: https://solarsystem.nasa.gov/kids/ Nasa Planets: http://solarsystem.nasa.gov/planets/ http://solarsystem.nasa.gov/index.cfm Space [...]
science websites [sky science]
November 18, 2010