Practise saying 'the number before' by counting back one!
Lay out your number cards 1 - 20 in a line.
Point to a number. What's the number before? We find out by counting back one.
Now mix up the number cards and lay them face down. Choose cards at random and try to say the number before.
If it's a bit tricky, stick to numbers between 1 and 10, and start counting down from 10 to help knowing the number before. E.g. what's the number before 6? 10, 9, 8, 7, 6...5!
For a challenge use higher numbers, perhaps chosen from a 100 square, and ask 'what's the number before each number!
Watch this video to practise counting backwards!
Practise the /air/ sound by following this link and signing into Espresso.