Watch the following clip all about number 20. Then have a go at writing your numbers to 20. Mix them up and try and put them all in the right order.
How to do it:
Follow the link to Numberblock 20
You will need some squares of paper or post-its and a pencil.
If you find it tricky:
Ask an adult for help with your counting.
Have a go at playing this game and see if you can get the numbers in the right order.