Here are the numbers 1 to 20 shown on a number line. You can use a number line to help you count on. You may already know the order the numbers go in.

Rodd’s new number line game involves counting along the 1-20 number line and roaring like a lion when we come to a ‘missing’ number. Rodd challenges children to identify the missing number ...

Children whose number line has made this change are better at remembering numbers, ... This was true for preschoolers for numbers from 1-20 and for elementary school children for numbers from 1-1000.