FIELD: education of visually handicapped. SUBSTANCE: pages of ABC-book are made of rigid material, providing mechanical strength of point, linear and plane relieves of a text. Introduction and training materials, teaching reading matters are placed on the pages in didactic succession. The ABC-book has an elastic movable membrane for closing pages according to a will of a person, being taught. EFFECT: enhanced serviceability of the book. 1 cl, 2 dwg
Authors
Dates
1994-11-15—Published
1991-05-28—Filed