I decided to take a stab at using modeling clay with the class. They said they would rather draw. Oh well - teacher wins! I used the Crayola Modeling Magic. It takes 72 hours to harden completely.
We looked at various photos of Lady Liberty and discussed why it is the color green. This site has a lot of quick facts to share: http://www.sciencekids.co.nz/sciencefacts/engineering/statueofliberty.html
For the base we used a piece of cardboard and a small cardboard box. We used toothpicks to provide support for the arms and head.
For the paint we mixed together green and white and a little blue.
I feel this was a challenge for them that they need extra practice in! We'll have to do it again sometime or I'll suggest it to the "real" art teacher!!!