Each group needs:

• small DC toy motor; available online
• 2 pieces of thin electrical wire with alligator clips, each about 50 cm or 20 inches long
• rubber band
• stiff ruler
• cylindrical-shaped cork, at least 2 cm or ¾ inch in diameter; alternative to cork: Styrofoam ball
• 4 paperclips
• scotch tape
• scissors
• 4 pieces of cardboard, each 3 x 5 cm
• (optional) safety goggles or glasses
• Wind Turbine Worksheet, one per team

For the entire class to share:

• 1 or 2 small electric fans or hair dryers
• DC voltmeter; available online