It's interactive learning fun. Press the sleek, silver Hot Dots Talking Pen to an answer dot on any Hot Dots or Hot Dots Jr. question for instantaneous visual and audio feedback. Brings Hot Dots and Hot Dots Jr. content to life, helping children practice subjects ranging from shapes, colors, letters, and numbers to academic vocabulary, science, language arts, and more. Enables self-paced, independent learning. Sleek, silver Hot Dots Talking Pen features 17 speech and sound effects and flashing lights--the set of 6 is perfect for the classroom. Includes 6 silver Hot Dots Talking Pens Compatible with all Hot Dots and Hot Dots Jr. sets. Each pen requires 2 AAA batteries (not included).