<p>This set of three board forms the introductory materials for the development of the tactile sense and prepares the handwriting. The first board introduces the contrast of rough and smooth. The second board helps to coordinate finger movements and builds dexterity. The third board introduces graduations of texture from fine to coarse. Each board is 24 x 13 cm with sandpaper strips mounted on smooth wood. (For age 3-6)</p>