printed materials, namely a series of books, booklets and flash cards on the subject of language arts for elementary school students; binders; charts; flash cards; posters; and kits consisting primarily of printed materials, namely a series of books, booklets and flash cards on the subject of language arts for elementary school students; binders; charts; flash cards; and posters

prerecorded audio tapes and videotapes featuring language arts for elementary school students; and kits consisting primarily of prerecorded audio tapes and videotapes featuring language arts for elementary school students