Hey LHS Kids is a science activities website for kids developed by the Lawrence Hall of science at UC Berkeley. Hey LHS Kids features some good activities for primary school students.
The Active Science resource contains a variety of Science activities and information. There is something for everyone - from age 5 years upwards, including parents and teachers.
Created by Sellafield Nuclear Power Station, the Succeeding with Science website contains many different interactive activities and downloadable resources. There are resources here for both primary and secondary (and post-16) teachers on a number of different topics such as electricity, states of matter, carbon footprints and radioactivity.
Links to a massive collection of science and maths movies on Khan Academy's channel on YouTube. We have 900+ videos on YouTube covering everything from basic arithmetic and algebra to differential equations, physics, chemistry, biology
"The Physics Front provides high quality resources for the teaching of physics and physical sciences courses.
The Physics Front is a free service provided by the American Association of Physics Teachers in partnership with the NSF/NSDL. "
Excellent physics resources for teachers - including primary and middle school!
Science on the Simpsons contains a collection of short clips from the Simpsons TV Show. The clips would make great lesson starter clips to introduce topics such as Natural Selection, Newtons Third Law and Angular Momentum.