Effects of sight impairment on comprehension of scale

Size and scale are important concepts across disciplines, particularly with recent advances at the very large and very small ends of the continuum, which are also hard to teach and understand. Since not much is known about how people develop a sense of linear size and scale, particularly for children with visual impairments, the authors compared their accuracy to that of normal students, as well as examined their experiences learning about size in- and out-of-school. The authors speculate that educators may find students with visual impairments to have unique accessibility to concepts of the very large and small scales of science.