The Literacy Cube, model 4067C, is an educational aid designed for use by individuals with cognitive or communication disabilities. Used like dice, whatever image lands on top is the subject of the discussion. It can be used to improve vocabulary, letter recognition, sound recognition, and literacy skills. This large cube has six clear plastic pockets hold pictures, words, or letters (not included). The pockets can also store extra pictures. DIMENSIONS: 4.5 inches square.