Learn about energy sources and how to "think green" with this latest addition to the Snap Circuits family of electronic learning kits. Build over 125 projects, using the flexibility of award-winning Snap Circuits®. Have loads of fun learning about environmentally friendly energy alternatives and how the electricity in your home works. The included educational manual explains different forms of environmentally friendly energy including: geothermal, hydrogen fuel cells, wind, solar, tidal, hydro, and others. Contains over 40 parts. Includes full-color manual with over 100 pages and separate educational guide.