Educational Insights Hot Dots Jr. Let's Master Pre-K Math Set with Ace Pen Give your kids the jump-start they need to prep for school success with this fun, interactive Hot Dots Jr. set and Ace - the Talking, Teaching Dog pen. Includes 85 pre-K level lessons and 15 advanced lessons in 2 spiral-bound books. Plus, Acethe Talking, Teaching Dog pen. Press Ace to an answer dothe offers affirmative "ruffs" and encouraging words for correct responses, and gentle redirection for incorrect responses. Provides your child with 100 richly illustrated lessons covering a variety of math skills from counting, to numbers and patterns, to time and fractions. Helps develop critical early learning skills, and provides confidence-building feedback. Encourages self-paced independent learning. Interactive pen can be used with any Hot Dots and Hot Dots Jr books, activities, and card sets for endless learning and fun! Also includes 15 challenges for next-level skill prep! Give kids a leg up on next year's learning or the practice they need right now! Requires 2 AAA batteries (not included)