problem
Favourite
What was in the box?
Age
5 to 7
Challenge level
This box does something to the numbers that go into it. If you know the numbers that come out, what might be going on inside 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?
