problem
Doing and undoing
Age
5 to 11
Challenge level
An investigation looking at doing and undoing mathematical operations focusing on doubling, halving, adding and subtracting.
problem
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
What's happening?
Age
5 to 7
Challenge level
Shapes are added to other shapes. Can you see what is happening? What is the rule?