Build key early literacy skills with hands-on, interactive Hot Dots activities! The Hot Dots Alphabet Set includes 36 double-sided cards (72 activities) and an interactive pen with lights and sounds (or a mute option). Press the pen to an answer dot and get immediate feedback; the pen lights up green for correct answers and red for incorrect answers and plays sounds! The pen does not talk or provide answers. Boost confidence and build preschool and kindergarten reading skills! Pen requires 2 AAA batteries (not included).