problem
Count the digits
Age
5 to 11
Challenge level
In this investigation we are going to count the number of 1s, 2s, 3s etc in numbers. Can you predict what will happen?
problem
I like ...
Age
5 to 7
Challenge level
Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?
problem
Secret number
Age
5 to 7
Challenge level
Annie and Ben are playing a game with a calculator. What was Annie's secret number?
problem
What number?
Age
5 to 7
Challenge level
I am less than 25. My ones digit is twice my tens digit. My digits add up to an even number.
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?