"It's the mind-body connection. The body acts as a tool by which you can control your element, and varies what you can do with it. I can do a lot of little things without a lot of movement."

Aang holds his hand out and by creating a small vacuum, sucks the pieces from Sep's hand into his own. He then quickly sorts them, and gets to his feet.

"But with a different movement, I can do something else entirely."

Here he takes a few steps back, so as not to scatter all their hard work to the winds...as it were. A few fluid arm motions later and there's a small spinning ball of air on the floor that Aang then jumps on top of and rides like a top around the other half of the room.