Stop the Clock
This is a game for two players. You can use the interactivity
below, or you could print off a page of blank clock faces in
Word or as a
pdf .
Set the time on the clock to $6$ o'clock to start the game.
Decide who will go first (player $1$) and who will go second
(player $2$).
Take it in turns to choose to move the hands of the clock on by
$\frac{1}{2}$ hour or by $1$ hour. For example, player $1$ could
choose $\frac{1}{2}$ hour, so the clock hands move to 6.30, then
player $2$ might choose $1$ hour, moving the clock hands to 7.30
... etc.
The winner is the player who moves the hands exactly onto $12$
o'clock.
Can you work out a winning strategy so that you can always beat
your opponent?
Full screen version
This text is usually replaced by the Flash movie.