Xavier started learning about electricity and magnetism recently in science. Yesterday we learned how electrons flow along wires, what a circuit was, and how series and parallel circuits are wired. Then we made our own! A couple light sockets, a couple bulbs, some wire, a couple nails, a few C batteries, a paperclip, and a chunk of wood. You can turn the lights on by connecting the paperclip across both nails.
Except for taping the batteries together, he made it all himself.