10 second countdown widget
For each of the 10 seconds, show EITHER a second count, or else a countdown number.

Not enough time to say 7 if you have to say "History begins in Dynastic China",
so we can skip that one too.

Possibly, we could say 

 15 
 14  Copper tools
 13 
 12  Bronze tools
 11 
 10 
  9 
  8  History begins in dynastic China
  7 
  6 
  5  Old Testament & Buddha
  4  Christ born
  3  Muhammad born
  2 
  1  Columbus in America
  0  ZERO! THE PRESENT! HAPPY NEW YEAR! THE BIG BANG!