Based on The Entire World of R™ program, this 8-book set targets each of the eight variations of /r/ [ar, air, ear, er, ire, or, prevocalic r, and rl]. Also included are /r/ blends and recurrent /r/. Children can change stories by flipping one of three panels that comprise each sentence story. The books can be an aid to focus on single words, phrases, sentences or conversational speech. Stories are divided and color coded by word position (initial, medial, and final) for  focused therapy. Books vary in size from 51 to 72 panels (17-24 pages).