Each group should have:

• 1 empty, clean 2-liter plastic soda bottle (or a 20-oz bottle, depending on availability) with holes drilled in the cap and the bottom of the bottle so that a wooden dowel fits through length of the bottle like an axle
• 1 pair of scissors
• duct tape
• wooden dowel (~¼ inch diameter and longer than the soda bottle length)
• string
• fin material, such as cardboard, index cards, straws, toothpicks, popsicle sticks, walls of plastic bottles, etc., that students can use to make turbine fins
• water-proofing materials (such as aluminum foil, plastic wrap, etc.) to wrap over any paper fins to keep them from disintegrating in the water
• water
• sink tap and drain access
• stopwatch