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Don't need the third eye to learn trigonometry

SBS Tamil Source: SBS Tamil

Tactile books gives same experience to the students with visual impairment. The main purpose of tactile books is to communicate an information in tactile form so that person with visual impairment can easily understand the concept completely. It is a conversion of a visual book into tactile form by keeping the perception of visual impaired person in mind. Dr M Balakrishnan, who is working on this for the past few years talks to Kulasegaram Sanchayan about his work and his passion.