problem
Favourite
What was in the box?
Age
5 to 7
Challenge level
This big box adds something to any number that goes into it. If you know the numbers that come out, what addition might be going on in the box?
problem
Favourite
School fair necklaces
Age
5 to 11
Challenge level
How many possible symmetrical necklaces can you find? How do you know you've found them all?
problem
Favourite
The amazing splitting plant
Age
5 to 7
Challenge level
Can you work out how many flowers there will be on the Amazing Splitting Plant after it has been growing for six weeks?