From the co-creator of the New York Times bestselling Ladybug Girl series comes a joyful counting book about inclusivity, play, and the thrill of making new friends—from one to ten and back again. A quiet day at the playground turns into a boisterous park-wide adventure as one boy on the slide becomes two kids on the see-saw, then three jumping rope. Before long, ten new friends are playing like they've known one another forever. With its deceptively simple text and a rich visual narrative, How to Two is a playful counting and reverse-counting concept book as well as an exuberant celebration of inclusive play, friendship, and community. "No two ways about it—this one is a delight." —Kirkus "A joyous celebration of play...Seamless...Diverse." —The Horn Book (starred review) "Inviting and welcoming." —BCCB (starred review) "Dynamic." —Booklist "Exciting." —Publishers Weekly