When JoJo falls down and hurts her chin, her dad tries to help her boo-boo. But JoJo is scared! Her dad helps her understand that boo-boos aren't so scary. Boo-Boo! soothers toddlers fears about small cuts and scrapes. Written with simple language and reflective of children's realities, the Terrific Toddlers series is based on understanding of the developmental level of young toddlers. Toddler-PreK. Hardcover.