Back when I was in elementary school in 4th or 5th grade (can't remember which, probably 5th) they took all the slow kids (I wasn't very smart in elementary school) to the university and had us go on the low ropes course (what a long sentance). It was a multi-day thing, and for the first day for several hours they made us stand on this log and arrage ourselves from oldest to youngest without talking. We couldn't do it. It was hard to stand on the log and we kept falling off. Then they told us "adults can do it, so why can't you do it?". Another happy childhood memory...
I'm not sure. We were supposed to work out some sort of sign language system with our fingers, but most of the people didn't catch on and the few that did have a ton of trouble switching places. To have two people trade place was extremely difficult.
