Interactive children's book
Interactive children's books are a subset of children's books that require participation and interaction by the reader. Participation can range from books with texture to those with special devices used to help teach children certain tools. Interactive children's books may also incorporate modern technology or be computerized. Movable books, a subsection of interactive books, are defined as "covering pop-ups, transformations, tunnel books, volvelles, flaps, pull-tabs, pop-outs, pull-downs, and more, each of which performs in a different manner. Also included, because they employ the same techniques, are three-dimensional greeting cards."