All of the tricks in this feature seem magical, but it's mathematics that makes them work. Figure out the maths behind the tricks, and amaze your friends and family with your mathematical wizardry!
problem
Favourite
The Number Jumbler
Age
7 to 14
Challenge level
The Number Jumbler can always work out your chosen symbol. Can you work out how?
problem
Favourite
Your number is...
Age
7 to 14
Challenge level
Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?
problem
Favourite
Your number was...
Age
11 to 14
Challenge level
Think of a number and follow my instructions. Tell me your answer, and I'll tell you what you started with! Can you explain how I know?
problem
Favourite
Twisting and turning
Age
11 to 14
Challenge level
Take a look at the video and try to find a sequence of moves that will untangle the ropes.
problem
Favourite
More twisting and turning
Age
11 to 16
Challenge level
It would be nice to have a strategy for disentangling any tangled ropes...
problem
All tangled up
Age
14 to 18
Challenge level
Can you tangle yourself up and reach any fraction?
list
Mathematical Wizardry
The tasks in this feature all contain tricks that use maths, not magic, to make them work!