What do kids need to know for school? The Hot Dots Let's Learn Pre-K Math set covers essential math skills that kids need for preschool and kindergarten. This 50-page pre k workbook is perfect for homeschool preschool, summer review, preparing for the school year, or supplemental practice at home. It covers all the essential preschool math skills, including number recognition, counting, patterns, shapes, sequencing, and more. Pen requires 2 AAA batteries (not included). Hot Dots toddler learning books for 3+ year olds are interactive so kids can learn at their own pace, self-correct, and build confidence across different subjects with the interactive pen. How does the pen work? When you press it to an answer dot, the pen lights up; green for correct answers, red for incorrect. The pen can also play sounds or be muted; the pen does not talk. At Educational Insights, we've been helping kids learn through play for 60 years. We work with experts in distinct fields to ensure that our products are the very best they can be. Our award-winning, best-selling toys and games spark new interests, unleashing limitless possibilities.