### How Many Days?

How many days are there between February 25th 2000 and March 11th?

### Planet Plex Time

On Planet Plex, there are only 6 hours in the day. Can you answer these questions about how Arog the Alien spends his day?

### On What Day Did it Happen?

Read this article to find out the mathematical method for working out what day of the week each particular date fell on back as far as 1700.

# Stop the Clock

##### Stage: 1 Challenge Level:

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

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