Any good small projects to impress 13 year olds? Answered
I've taken up a habit of making some tiny pocket-sized (or school bag sized) projects (one each week) and carrying it around with me to entertain Years 7 and 8 (12-14 year olds) and teach them some Physics at the same time. I've looked through some ordinary school demonstrations, but I need something small, great, not needing much preparation to show it, and also something none of them has ever seen, which is pretty hard...
After a little more than a month I've already ran out of ideas, but I don't want to finish this practice, because both I and the kids like it.