| 摘要 |
A large cube (14) is formed of small cubes in rows and columns, each small cube having a small square face with a central aperture (30). A plurality of similarly configured tiles (34) each have exterior and interior faces (34, 36) and a circular periphery. Each of a plurality of projections (40) extends perpendicularly from the interior face of each of the tiles. Each projection is in frictional contact with the aperture of an associated one of the small cubes. Indicia (56) in the form of letters is on the exterior surfaces of the tiles. Mechanisms allow rotational movement of the small cubes to rearrange the letters and to allow the twisting of the tiles to invert and revert the letters for increasing the readability of the letters and words spelled by the letters. |
