Build over 60 electronic projects including a finger touch lamp, a metal detector, a transistor radio, and an alarm with the 60-In-One Electronic Playground. Learn about voltage, currents, resistors, capacitors, and much more. Uses spring hook-up method. Create with confidence using the spring hook-up method and get ready to explore the world of science and electronics! Don't just observe - get your hands dirty and take your creations to the next level!