September 23, 2009
4th Grade TAG at Village of Barboursville built drawbridges today.
Then they motorized them.
The four groups worked together in 2 groups to make pairs of drawbridges open together.
Pull down with string. Push down with LEGO beam for a finger.
Connect to top beam directly or with pulleys.
Use a lift arm as a finger to push down.
Many solutions - all worked.
