Interactive whiteboards are large touch-sensitive boards connected to a projector and computer that allow users to manipulate projected images. Popular brands include SMARTBoard and Promethean Board. Interactive whiteboards can be used to reinforce concepts through games, emphasize information in presentations, take notes directly on presentations, and project e-books. Benefits include increased student engagement, interactivity, and support for different learning styles, while drawbacks include cost, need for teacher training, and potential obstruction of projection.