Terrific Tuesday- Making a Telegraph

The kids used a piece of styrofoam, a few rubberbands, a nail, some wire, a paper clip and a battery to make a model of a telegraph machine. When they closed the circuit with the wire, the battery magnetized the nail which attracted the paper clip with a clicking sound which imitated the dash/dot of Morse Code.

More electronics stuff that I don't really understand but I don't have to because Barb does! Thanks, Barb!

(Let me know if I got the explanation right....:)