Discover One & Other Numbers with Alexander Calder by Phaidon. Featuring the works of master sculptor Alexander Calder, this playful, read-aloud board book helps little ones practice counting with some of the most famous sculptures in the world. One & Other Numbers cleverly teaches toddlers about quantity, a vital early-learning concept, while simultaneously familiarizing them with the famous artist and his work. Suitable for children ages 1-3.