This was an early form of primer used from Tudor times to teach children the alphabet. The paper with the letters on was covered with a thin sheet of transparent horn. This C19th version is covered with celluloid.
These Stone Age implements found locally, were not made here as there is no flint in the area. Either they were brought from somewhere on the South Downs by travelling workers from that area or local people went south to get them. They were the only edged tool available at