Here’s a game to play with a grown-up!
How do you play?
You'll need a grown-up to play with.
You’ll also need a set of blank clock faces,
or you could use the interactive version
Set the time on the clock to 6 o’clock to start the game.
Starting with the grown-up, take it in turns to move the hands of the clock on by ½ or 1 hour. For example, the grown-up could choose ½ hour, so that the clock hands move to 6.30, then you might choose 1 hour, moving the hands to 7.30, and so on.
The winner is the person who moves the hands exactly onto 12 o’clock.
Does it make a difference if you go first instead?
What happens if the grown-up gets to 10.30? Why?
Can you work out a winning strategy?
Notes for grown-ups
Stop the clock helps to develop children’s fluency with telling the time and calculating time intervals. However, the real challenge is to find a winning strategy!
start at 9 o’clock instead of 6 o’clock.
try using different time intervals e.g. ¼, ½ or ¾ hour.
Repeat the game, aiming to find a winning strategy, then talk together about how it was found.
There's a classroom version of this game here