You will need:

What to do:

  1. Use your markers to cover a piece of paper with bright colors all over.  A zig zag or striped pattern can make it easy.
  2. Scribble all over the piece of paper with your black crayon so that your bright colors are covered up.
  3. Use your coin (or similar) to scratch a pattern or picture into the black crayon.   As you scratch off the black crayon, the bright colors are revealed.  There is your Technicolor surprise!