Build your own soundscapes, explore and contribute to a map of sounds, and learn what makes up a soundscape. Combines the work of naturalist and musicians.
This is still in beta, but this site includes pictures, videos and other cool stuff from the Smithsonian Institution and other sources, all about the ocean and what is in it.
" * Play with thousands of models.
* Create your own models with all new applications.
* Share your creations with your friends or the whole world.
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"Skoool.co.uk has lessons and simulations fro grades 6 to 10. The link here is to the key stage 3 chemistry page but you can access the rest from there."
"This is the home page of Doc Browns chemistry clinic. This has stuff for all from grade 6 to IB. It has revision notes and lots of interactive quizzes. The IB level stuff is aimed at A level but its still useful. Its not an easy site to navigate though"