Explore alternative energy with the Snap Circuits Green Energy SCG-225. This educational STEM building kit teaches the fundamentals of electrical circuits and green energy technologies. With over 45 parts, kids can build more than 125 projects, including a solar light clock, wind-powered mini car, and Morse code communicator. The THINK GREEN manual offers fun learning about solar, wind, hand-crank, hydro, and geothermal power. The kit includes a base grid, snap and jumper wires, battery, solar cell, liquid holder and electrodes, meter, motor, wind fan, water wheel, geared motor and crank arm, switches, LEDs, and more. Perfect for ages 8 and up, this set combines fun with education. Package dimensions: 15.1 x 12.2 x 3.1 inches.