Visualising and representing

problem
Digit addition

Age

5 to 11

Challenge level

Try out this number trick. What happens with different starting numbers? What do you notice?
problem
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
Folded number line

Age

7 to 11

Challenge level

When I fold a 0-20 number line, I end up with 'stacks' of numbers on top of each other. These challenges involve varying the length of the number line and investigating the 'stack totals'.
problem
Tied up

Age

14 to 16

Challenge level

How much of the field can the animals graze?
problem
Different deductions

Age

7 to 11

Challenge level

There are lots of different methods to find out what the shapes are worth - how many can you find?
problem
Fruity totals

Age

7 to 16

Challenge level

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?
problem
Birthday sharing

Age

5 to 7

Challenge level

It's Sahila's birthday and she is having a party. How could you answer these questions using a picture, with things, with numbers or symbols?
problem
More fraction bars

Age

7 to 11

Challenge level

What fraction of the black bar are the other bars? Have a go at this challenging task!
problem
Extending fraction bars

Age

7 to 11

Challenge level

Can you compare these bars with each other and express their lengths as fractions of the black bar?
problem
A4 fraction addition

Age

7 to 11

Challenge level

Try adding fractions using A4 paper.