Introduce your child to the basics of electrical engineering with the Snap Circuits Extreme SC-750R. This award-winning kit includes over 80 pieces and offers more than 750 unique electronic projects. Kids can build a sound-activated switch, adjustable light controller, AM radio, lie detector, rechargeable battery, and many more exciting projects. The set features components like an electromagnet, power amplifier, vibration switch, analog meter, and solar cell. The included CI-73 computer interface lets children see how waveforms and frequencies act as their circuits come to life. Perfect for hands-on learning, this kit comes with a 138-page educational curriculum student guide, making it ideal for homeschooling, middle schools, and high schools. Package dimensions: 16.4 x 12.3 x 6.1 inches.