Engage your students in active learning with the beneficial features of this Power Pen Lite. Pen is constructed for use with math & reading comprehension cards to build skills & reinforce lessons. With the easy-to-use design, children will simply select an answer & receive immediate feedback with an audio & visual response. Pen sends positive messages to correct answers & encourages redirection for wrong answers, keeping students motivated & on track. Power pen requires two AAA batteries (not included).