This self-checking electronic quiz card set features the amazing Talking Hot Dots Pen. Touch the pen to a dot, and it responds instantly with lights and any of 20 fun phrases or cool sounds. Answer correctly, and the pen glows green. Select an incorrect answer, and it glows red. Set includes one pen and 80 two-sided illustrated lesson cards. Lesson cards feature early learning skills in five progressive categories that teach colors, patterns, shapes, numbers, letters, and much more.