21C revision site

This is what resources should be!
http://funnyscience.co.uk/

Talking points in class > internal resistance

Story about a Sailor who measured his internal resistance. He intentionally pushed the sharpened probe tips through the skin to eliminate the rather high skin resistance and get only the "internal resistance". This killed him because the current was then too high from the 9V battery
http://www.darwinawards.com/darwin/darwin1999-50.html

21C resources

This is an excellent site for many resources including Ideas papers.
http://schools.northyorks.gov.uk/1279