Each group needs:

• scratch paper, 1 sheet
• scissors
• marker
• 2 sheets of cardboard, each 1 x 1 foot (30 x 30 cm)
• 2-6 wooden dowels, four-inches (10 cm) long x 3/8-inch (9.525-mm) diameter
• masking tape, 12 inches (30 cm)
• Wind Turbine Activity Worksheet, one per student

To share with the entire class:

• wind turbine tester; construct for ~$20 using materials and instructions at https://www.instructables.com/id/Model-Wind-Turbine-KidWind-Project/
• electrical multimeter
• electric fan with multiple speeds, 14-20 inch (35-50 cm) diameter preferred
• protractor
• 2 large charts, such as on a classroom board or large sheets of paper (see Table 1), into which teams record their initial design and redesign results
• computer and projector to show the Wind Turbine Design Presentation, a PowerPoint® file