Yoyo Goes to the Park

Introduced in board books last year, the yellow dog YoYo is on the go-go in two lift-the-flap paperbacks, YoYo Goes Next Door and YoYo Goes to the Park, both by Jeannette Rowe. Vertical and horizontal gatefolds extend the action in the illustrations, which are almost Maisy-esque in their bright color and simplicity. (Mar.)