Hot Dots - EII2438 Children learn all on their own with the Hot Dots Light-Up Interactive Pen. Simply press the pen to any answer dot on one of dozens of Hot Dots and Hot Dots Jr. (not included) activities for instantaneous audio and visual feedback. Lights and sounds indicate right and wrong answers, enabling children to learn and practice critical learning skills independently. Children learn at their own pace at home, in school or on-the-go.