Gyration

The Lens Day challenge for May 31, 2005 is: Gyration

1. The act of gyrating.
2. a. Circular or spiral motion.
   b. An oscillation or varying between states: "increased volatility and unprecedented gyrations in interest rates" (Jack Egan).

I choose definition 2b. Not only do the children in the swings oscillate between 2 different states, but they and their facilitators change gender. How cool is that?