This cozy debut as an author from illustrator Reynolds (Sammy and the Dinosaurs, 1999) sympathetically addresses the jitters that often herald the transition into preschool. A little boy and his bear are going to school for the first time, and while Pete eagerly anticipates the experience, his bear Polo is more apprehensive. Reynolds gently leads tots through a typical preschool day; there’s painting and dress-up play, storytime and snack time, and then the big moment when Pete and Polo separate for outdoor play. Yet even this hurdle is overcome with ease, as Pete plays with the other children while Polo frolics with their stuffed bears. By day’s end, both boy and bear are looking forward to their next day of school. Gaily colored watercolors, depicting lively scenes of children playing, further reinforce the tale’s positive message. Particularly appealing is the animation of Polo, as readers see his actions through the perspective of Pete. Reynolds portrays Polo as participating in the activities—feeding the fish, sipping out of the straw, etc. With ears perked up and bright eyes shining, Polo is the perfect preschooler’s companion. While the story doesn’t break any new ground, the comforting tale will reassure young children awaiting their own big first day of school. (Picture book. 3-6)