Hot Dots is a hands-on activity book and electronic pen that turns first grade math practice into independent and interactive learning experience. Practice essential math skills for first grade like addition, subtraction, place value, geometry, and more with 50 pages of activities created by teachers. Press the interactive pen to an answer dot and get instant feedback; the pen lights up green for correct answers and red for incorrect answers. The pen also plays sounds or can be muted for quiet learning. The pen does not talk or provide answers. Pen requires 2 AAA batteries (not included).