Have a look at these photos of different fruit. How many do you see? How did you count?
Try out this number trick. What happens with different starting numbers? What do you notice?
The Number Jumbler can always work out your chosen symbol. Can you work out how?
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'.
There are lots of different methods to find out what the shapes are worth - how many can you find?
In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?
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?
What fraction of the black bar are the other bars? Have a go at this challenging task!
