Hand Gestures Dramatically Improve Learning

I'm wondering whether this is transferable to other kinds of classroom learning. "Kids asked to physically gesture at math problems are nearly three times more likely than non-gesturers to remember what they've learned." The figures look like this: "Of those children who had learned to solve the problem correctly, only a third of the speech-only students remembered the principles involved, but that figure rose dramatically for the speech-and-gesture, and the gesture-only group, to 90-percent retention."
Also wondering: what kind of gestures? Is this transferable to other subjects? (probably it is).
It may have something to do with recent research and hypotheses which implicate gesture in communication, and this is significant because of the increasing likelihood that language/representation is fundamentally metaphorical and the metaphors are based in bodily experience (see Philosophy in the Flesh and Metaphors we Live By), indeed the lead researcher almost says as much: ""My intuition is that gestures enhance learning because they capitalize on our experience acting in the world," says Cook. "We have a lot of experience learning through interacting with our environment as we grow, and my guess is that gesturing taps into that need to experience.""
ScienceDaily: Hand Gestures Dramatically Improve Learning: