Schulte Table is invented by Doctor Schulte, it's usually used for the training of attention and speed reading. How To Play:Select all the numbers in the correct order(Ascending by default) in a 4x4-8x8 grid as fast as you can. The difficulty of the game is gradually increasing with the grid size.You can also change the order to Descending.The longer the practice, the shorter time needed to read the whole table.Additional features:support both ascending & descending ordermultiple color schemesGame Center supported