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 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. Grades PreK+.