Piggy has a hard time saying good-bye on the first day of preschool in Bye, Bye! by Nancy Kaufmann. Jung-Hee Spetter's endearing Piggy, from Just a Minute! and Piggy's Birthday Dream, asks Daddy to stay and play. But when the teacher tells Daddy it's time to leave, Piggy has fun playing with a menagerie of other classmates. Lively illustrations in Spetter's trademark citrus colors capture both the fun and anxiety.