I just received grant monies for Recorder Books (books on tapes) and now have no clue as to which ones to purchase. I am interested in Nonfiction for below-level readers for grades 4-8 who are at 2nd-3rd grade level. I went to recordedbooks.com and they have a ton of books on tape; it only confussed me more. Has anyone else used or heard of anyone who has used books on tape with their students? If so, which ones did you like? Help.......