This is a superb environmental game which is reminiscent of the early SimCity games. Build a wonderful town, manage your fossil fuels wisely and keep the inhabitants happy. A free sign up is required.
ictmagic.wikispaces.com/PSHE%2C+RE%2C+Citizenship%2C+Geography+%26+Environmental
Mix chemicals and solutions without producting any unpleasent smells (hopefully) with this virtual chemisty lab. Use online or download.
http://ictmagic.wikispaces.com/Science
A breathtaking online space resource. Users explore the International Space Station from the outside in a realistic 3D space walk simulator.
http://ictmagic.wikispaces.com/Science
ORBITER is not a space
shooter. The emphasis is firmly on realism, and the learning curve can
be steep. Be prepared to invest some time and effort to brush up on your
orbital mechanics background.
ORBITER is a free flight simulator that goes beyond the confines of Earth's atmosphere. Launch the Space Shuttle from Kennedy Space Center to deploy a satellite, rendezvous with the International Space Station or take the futuristic Delta-glider for a tour through the solar system - the choice is yours
Celestia is a free and open source space simulator that allows you to explore space right from your computer. Celestia is available for download on Windows, Mac OS X, and even Linux. Celestia has many very cool features, including an eclipse finder.
Not only does the eclipse finder allow you to find solar and lunar eclipses on Earth, but you can seek eclipses on other planets as well. I found out something really cool when checking out eclipses on Jupiter - because Jupiter is very large and has many moons, solar eclipses are very common.