Tubes and Cars

A couple of carpet tubes are a wonderful toys. The Sea Otter class is fascinated with them as tunnels for the cars. They have to wrk out where to prop up the tubes, what happens when the tube rolls off, what cars will fit, what to do when all of the cars have gone down the tube, whose turn is it, and much more.

Here a little boy works on what to do if you put a tube in a tube. Engineering in action!