Build over 50 electronic projects including a finger touch lamp, a metal detector, a transistor radio, and an alarm. Learn about voltage, currents, resistors, capacitors, and much more. Uses spring hook-up method. This lab is commonly used in the Bob Jones Home School Curriculum. Build these exciting circuits: finger touch lamp, magnetic bridge, voltmeter, morse code, alarm, electronic noisemaker, electronic kazoo, electronic keyboard, AM Transistor radio, radio announcer, and metal detector. Learn about voltage, currents, resistors, capacitors, transistors, diodes, transformers, speakers, and antennas. For ages 10 and up. Requires 1-9V battery (not included)