Today we are going to make our number line go up to 20. So you will need the rest of your pieces of card or paper and make the numbers 11 to 20. All of the numbers from 11 to 19 are made of 1 ten and some units or ones. Could you show the ten part of the number as a ten? Have a look at these examples for some ideas.
Put your new cards with the ones you made yesterday.
Shuffle them up and see if you can put them back in order. You could time yourself, then do it again and see if you can do it faster.
Shuffle them and put them in order from 20 to 1.
Close your eyes and get someone to hide one, which one is missing?
Ask someone to take some of the cards out of the set. Can you still put your cards in the right order?