Netsmartz: internet safety
Kidsmart is an award winning practical internet safety program website for schools, young people, parents, and agencies, produced by the children's internet charity
Childnet International is another site that talks about internet safety
The Tempered Radical has handouts that go with the Trailfire site:
Participate: is a growing community of film lovers and activists who are dedicated to engaging their minds, sharing their passions, and improving the world around them. You have to register for the site but when you click on certain movies, there are educator resources available for them. Participant productions produced Al Gore’s movie An Inconvenient Truth and there are other movies coming out.
Sharp Brains: there are many brain exercises that are fun to try.
BBC Schools : has great science clips you can use in the classroom