Smooth and rough boards

There are three boards of smooth and rough. Strips of sandpaper of the same colour are applied to the smooth wooden surface of the three boards: the first, to highlight the contrast, is made up of one half smooth and one half rough; the second, with a series of smooth and rough strips in an alternating sequence, invites a light touch, which is useful for initiating writing and promotes dexterity and coordination; the third highlights the grain with a series of rough strips in gradations from fine to coarse. The boards facilitate the tactile perception of surfaces and encourage the ability to control and maintain attention. The sensory game is a valuable aid for the development of touch and highlights the contrast of smooth and rough surfaces.