Incised grids: enhancing the readability of tangible graphs for the blind.
D000293:Adolescent; D001766:Blindness / Q000523:psychology / Q000534:rehabilitation*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D011597:Psychomotor Performance; D011932:Reading; D012682:Sensory Aids