Experiment with the Wonderwhirler to see if you can make it spin in the opposite direction as it falls. Cut the wings of the Wonderwhirler to different lengths and see if the behavior of the Wonderwhirler changes. You may take your Wonderwhirler home. At home, you can try making a Wonderwhirler using different types of paper and performing the above experiments. The blades of this paper whirler turn as air pushes on the body of the whirler, while the speed of their rotation is affected by the weight of the whirler.
Air rushes out from under each wing in all directions as the whirler falls.
The air hits against the body of the whirler, causing it to rotate. Increasing the weight of the whirler by adding paper clips causes it to fall faster, increasing the flow of air against the body of the whirler, thus increasing the rotation speed. However, when too much weight is added, the whirler is pulled down with such force that the wings are forced upward. Then the wings are no longer able to provide lift or rotation due to lack of air resistance, and the plane quickly falls to the floor.