June 7, 2011 3:32 pm Education Nation Tim Furlong takes us on a look inside the learning plaza from Education Nation at the National Constitution Center. US & World Videos 2:06 Arrests made in Delaware State University shooting that killed teen visiting campus 0:19 Police search for man they say installed skimming device on Bucks County ATM 9:52 Gun pulled on Pa. pastor: The Lineup 0:51 NJ state trooper dies during training exercise 0:28 Stevie Wonder offers advice to Lincoln University grads