Thirty teachers gathered in Sacramento at SMUD Energy Technology Center on recent Saturday to learn how to integrate solar energy lessons into their classrooms. They also built solar cell phone/mp3 chargers using cardboard, duct tape, and solar cells. The Notebook chargers provide a practical application for solar electricity – charging the battery on your mobile device using only the energy of the sun. Educators also built a small motor-driven whirlygig – a kinetic sculpture – that when powered by the solar notebook, demonstrates how solar cells work. Solar Notebook Charger Kits are available from Solar Schoolhouse (Rahus Institute).