Pete The Cat is bringing his groovy music to Hot Dots exercises! Kids simply press the pen to an answer on the Hot Dots page and instantly know whether their answer was right or wrong. Pete plays music and lights up - green when the answer is correct, red when the answer is wrong. Terrific for allowing students to learn at their own pace, for use in centers, or for kids who finish assignments early. Pen works with all Hot Dots and Hot Dots Jr. cards and sets. Requires 2 AAA batteries, not included. Cards and sets sold separately.