problem Stop the Clock Age 5 to 7 Challenge level This is a game for two players. Can you find out how to be the first to get to 12 o'clock?
problem Lengthy journeys Age 7 to 11 Challenge level Investigate the different distances of these car journeys and find out how long they take.
problem Thousands and Millions Age 11 to 14 Challenge level Here's a chance to work with large numbers...
problem All in a jumble Age 11 to 14 Challenge level My measurements have got all jumbled up! Swap them around and see if you can find a combination where every measurement is valid.
problem Clocking off Age 7 to 16 Challenge level I found these clocks in the Arts Centre at the University of Warwick intriguing - do they really need four clocks and what times would be ambiguous with only two or three of them?
problem Street Lamps Age 11 to 14 Challenge level Walking up a steep hill, I pass 10 equally spaced street lamps. How long do I take to walk from the first lamp to the last?
problem Decimal Time Age 11 to 14 Challenge level Use the clocks to investigate French decimal time in this problem. Can you see how this time system worked?
problem Time Line Age 5 to 7 Challenge level Describe what Emma might be doing from these pictures of clocks which show important times in her day.
problem Two Clocks Age 7 to 11 Challenge level These clocks have only one hand, but can you work out what time they are showing from the information?
problem Decimal Clock Age 11 to 14 Challenge level A decimal clock is started at midnight. What time would it show at 6 o'clock in the morning?