Faces: Busy Block Books

A plastic block, attached by a ribbon, shows through the die-cut window at the center of four Busy Block Books: Faces, Shapes, Colors and Animals, all by Patty Smith, illus. by James Lee Croft. Children must figure out which side of the block best fits into each picture. For example, in Animals, the cube has a body part on each side. One page contains a missing ""tail,"" so children have to find the side of the block that completes the picture. ( July)