• 3 by 12 inch strip of paper
  
  
• 2 paper clips
  
  

1. Bend the paper to the right and fasten it half way along the strip making a loop.
   
   
2. Now, bend the other end of the paper away from you and fasten it with another paper clip to the outside of the first loop. Hold the two ends of the paper in your hands, say some magic words, and pull.
   
   
3. Ta Da! Your clips will be linked.
   
   
4. Now, see what happens when you use three paper clips.