Goes with this video http://player.discoveryeducation.com/index.cfm?guidAssetId=1A86CADF-15D0-4FB7-8270-682E5AFD69F9&blnFromSearch=1&productcode=US
Or log in to play for credit.
This activity is tracked by Mr. Burns. If you are in Mr. Burns's class, please log in for credit:
