Preschoolers love using the Educational Insights Hot Dots Jr. Interactive Storybook Set as they enjoy these fun stories, each with 11 interactive early learning activities designed to support school readiness. It encourages playful, interactive learning with confidence-building feedback. The stories also encourage independent learning and provide ample practice time. This set includes four, 24-page, richly-illustrated storybooks that prepare preschoolers in the areas of alphabet readiness, beginning phonics, patterns, shapes and more. Ace, the talking, teaching dog cheers for correct answers and gently redirects children when they answer incorrectly. The pen requires two AAA batteries, sold separately. The books are ideal for kids aged four and above.