The 5th graders are currently involved in a collaborative wire sculpture unit, based on Alexander Calder’s Circus. One thing that specifically impressed the students was Calder’s ability to make his sculptures movable.
Well, Cambridge just happens to have a great exhibit about a gestural engineer, Arthur Ganson, whose sculptures are all movable. If you haven’t been to the MIT Museum, you need to go to check out his works.
Here are some links to videos and youtube links of his sculptures: