Flexatube

Can you turn this tube inside out by folding it along the fold lines? Make a flexatube and try it.

Steps

1. Cut out the pattern piece and crease the paper along the dashed lines. Fold the creases back and forth so the paper can fold easily in either direction.
   
2. Fold the piece into a square tube and glue it at the tab.
   
3. Folding only along the crease lines, turn the tube inside out. Do not deform the paper in any other way.
   

Notes

• The flexatube was invented by Arthur H. Stone, the person who invented the flexagon.
  

References

• (Köller 2005)