David is an expert digger. No matter what kind of construction site he's working at, he always knows just what to do! But one day, he goes to work somewhere new--a swimming pool. David is very confused. When another digger offers to teach him what to do, David will learn that even experts can ask for help. Aligned to Common Core Standards and correlated to state standards. Calico Kid is an imprint of Magic Wagon, a division of ABDO.