Paper airplane
1. There are many kinds of paper airplanes.
2. This is a simple one made from one sheet of paper.
3. Fold the paper in half down the center then open it again.
4. Fold two ends to make two right-angle triangles.
5. Fold once again, this time to make two isoceles triangles.
6. Fold the two halves together.
7. Fold the top edges down against the bottom edges to form the wings.
Not exactly a paper airplane, but try describing a mechnical toy like this one:
Walking elephant
1. The walking elephant is a battery-powered mechanical toy.
2. It consists of a wooden body, a motor and gearbox, a battery case and switch.
3. Assemble the switch.
4. Put together the battery case.
5. Connect the motor to the switch.
6 Screw the motor, gearbox, and switch onto the baseboard.
7. Attach the legs, the link rods and the head onto the body.
8. It doesn't move very fast and the feet tend to slip.
9. However, the swaying from side to side is similar to that of a real elephant.
How to