So glad you liked it - I'm actually trying to write up a more elaborate version of the activity for a magazine - be sure to bug me about it next fall. Also - FYI - Michelle is grading your project so she'll be in touch with you soon and she will also make sure the paperwork gets to the DOE!
Yes, I saw your post. It is great that you have so much freedom in your curriculum. I would be happy to give you some feedback on your lesson once we have finished grading all of the TTP projects.... :) Stay tuned. :)