Kim463627go Kim463627go Science Answered A. Directions: Classify whether the machine is lever, screw, wedge, inclined plane, wheel and axle or pulley. Write your answer on the blank provided. 1. Doorknob 2. Stairs 3. Safety pins 4. Fan knife 5. Bolo 6. Seesaw 7. Scissors 8. Tongs 9. Tweezers 10. Stapler