The proper name for this flier is autogyro. It spins as it slowly falls, causing its rotor (the moving parts) to cut through air like wings, creating lift for a leisurely descent.
- Heavy card stock
Measure and mark a 5-by-11-inch section on a piece of heavy paper, such as cover stock. Cut out the section.
Hold the paper, with a short side toward you. Cut a 5-inch slit lengthwise down the center. Mark edges at end of slit on opposite sides. Cut a 1-inch slit in from each edge at the marks.
Fold in the sides below the slits toward the center; they will overlap.
Use transparent tape to attach the two folded sides together. Decorate top flaps with colored stickers, if desired.
Fold the bottom edge up twice, 1 inch at a time. Fasten with paper clips. Fold one flap toward you and the other away from you. Throw whirlybird straight up in the air to make it fly downward.