Twenty Blue Birds (28cm x 20cm) display numbers from 1 to 20. Even numbers are blue and green, and odd numbers are blue and yellow.
Bluebirds may be displayed in a straight number line or alternatively placed at different heights to emphasise the pattern of odd and even numbers.
Objective: number recognition and mental manipulation of a number line 1 – 20. To see the pattern of odd and even numbers and recall them to 20.