This collaborative activity is a perfect way to encourage group work in a timed environment. Its perfect for a 90 min class or two 45 min classes. Groups are created and are timed while doing five separate things: research a WW2 technology, assess how the technology affected the war and human lives, research how others defended against the technology, create a 2 min presentation and present. The technologies assessed are: tanks, submarines, aircraft carriers, bombs, infantry weapons, and planes