The NPS has a great resourse website! We are doing a stufy on the Liberty Bell, it is maintained by the NPS.
The site has a "for Teachers" area, which includes LESSON PLANS! The one for the Liberty Bell is 200+ pages long, for k-12. It has everything you could think of! I am sure they have the "for Teacher" section on other areas of interest so I thought I would pass this on!
Be the kind of Woman that when your feet hit the floor each morning the devil says "Oh Crap, She's up!"
Early detection is the key!