Electrical experiments couldn’t be easier. This kit requires no soldering or assembly-components are pre-mounted on the circuit board. Students simply connect wires to run the motor, bell, lamps and buzzer-individually, or in almost any combination. The kit includes: one plastic circuit board with two mounted D-cell battery holders, three miniature lamp sockets, a three-position switch, a bell, a motor, and 18 terminals; plus two D-cell carbon zinc batteries, seven circuit blueprints, assorted connectors, three 2.5V bulbs, five student workbooks, and teacher’s manual.