Learn how stuff works - including nuclear power and radioactive decay! http://www.howstuffworks.com/
8th Grade Physical Science Links http://www.scilinks.org/retrieve.asp
Manduca Project http://insected.arizona.edu/manduca/
Light http://micro.magnet.fsu.edu/optics/activities/students/index.html
Cow Eye Dissection http://www.exploratorium.edu/learning_studio/cow_eye/index.html
Periodic Table of the Elements Activities http://education.jlab.org/itselemental/
Science Activities and Lessons for Middle School http://sciencespot.net/Pages/classroom.html
Sound Waves http://www.youtube.com/watch?v=s9GBf8y0lY0
Sound Link http://www.fearofphysics.com/Sound/dist.html
Catalysts Explained http://www.youtube.com/watch?v=uGSLWZU7YtE&feature=related