I have a willing but low ability - and very small - Year 7 set, about to start on currents. I really want to set out by establishing what a current actually is, and I'm thinking of using the rope demo, but I'd like to do something with them on their feet 'moving the energy' themselves. The group is 15 kids (when they all turn up), I'd like to do something along the lines of the 'passing the energy along the line', but I've never done it and can't quite imagine how it works in practice. Can anyone help me with logistics/ repertoire of this demo, or suggest something else entirely, please? Thank you.