Educational Insights Hot Dots Jr. Interactive Storybooks, 4-Book Set with Ace Pen Take a trip with Ace and Kat! Four interactive adventure books allow little ones to practice critical preschool skills during story time! Each of the 4 richly-illustrated, 24-page storybooks features 10 activities covering the alphabet, numbers, counting, shapes, colors, and more! Press Ace to an answer dothe offers affirmative "ruffs" and encouraging words for correct responses, and gentle redirection for incorrect responses. Helps develop critical early learning skills, and provides confidence-building feedback. Includes 4 Ace and Kat storybooks with 44 interactive activities, and Acethe Talking, Teaching Dog pen. Books include Ace and Kat At The A to Z Store, Ace and Kat Go Camping, Ace and Kat's Undersea Adventure, and Ace and Kat's Good Time Band. Encourages independent, self-paced learning; works with all Hot Dots and Hot Dots Jr. cards and activities for years of interactive learning and fun! Pen requires 2 AAA batteries (not included)