Simple Circuits-- Electricity Education Kit This little kit explains the basic elementary fundamental underlying principles of electricity. Especially useful for kids and English majors, it contains a 7" x 5-1/4" base into which you insert spring terminals, small incandescent bulbs, a buzzer and sundry wires, plus a compass. Experiments include simple circuits, conductivity tests, series and parallel wiring, resistance and a home-style galvanometer. No soldering required, but (2) AA batteries (not included) are.