Learning colours is fun in this entertaining book from the creators of the #1 New York Times Bestsellers, The Day the Crayons Quit and The Day the Crayons Came Home.It’s Duncan’s birthday, and the crayons all want to make him a card! With their fun and quirky illustrations of fire engines, dragons, even wheat, the creative crayons each have something special to contribute. But when they come together, they can create a truly spectactular celebration!From the creative minds behind the The Day the Crayons Quit and The Day the Crayons Came Home comes a colourful board book introducing young readers to numbers.