Magnification

Daniel Kish has been Blind since he was 13 months old and has learned to "see" using a form of echolocation. He clicks his tongue and sends out flashes of sound that bounce off surfaces in his environment and return to him, helping him construct an understanding of the space around him.

In this TED talk, Dr. Dennis Hong explains the design, technology, application, and future of the prototype car for drivers who are Blind/Visually Impaired.

Inventor and IBM Fellow Chieko Asakawa has been Blind since she was 14. In this TED talk, Asakawa shows new technology that is helping people who are Blind/Visually Impaired (BVI) explore the world more independently. Asakawa explains how accessibility has ignited innovation for people who are BVI. She also shares ways for people who are BVI to access digital technology.

Retired Colonel Chris Hadfield delivers an inspiring reminder for people to pursue their dreams, no matter how big or small, and to stay strong in the face of diversity. Colonel Hadfield paints a vivid portrait of how to be prepared for the worst in space (and life) - and it starts with walking into a spider’s web.

What would a city designed for the blind be like? Chris Downey is an architect who went Blind suddenly in 2008. In this TED talk, Downey contrasts life before and after -- and shows how the thoughtful designs that enhance his life now might actually make everyone's life better, sighted or not.

TED features inspiring talks from Blind presenters on their accomplishments, including astronomers, inventors, and even an astronaut. Topics include technology, cars for the blind, and more.

This radio interview with Matthew Shifrin covers his new projects, including virtual reality, comic book access, rock climbing, and a podcast.

In this TEDx talk, Matthew Shifrin shares his adventures traveling alone overseas, converting Lego instructions for children who are Blind/Visually Impaired (BVI), and working with MIT scientists to bring an immersive superhero-comic experience to readers who are BVI.

Matthew Shifrin is an advocate for what is possible for people who are Blind/Visually Impaired. He has written braille and audio Lego instructions for the Lego Group, given TEDx presentations, and has several YouTube and Vimeo videos.

With UAbacus, add and subtract numbers using the "logic method" for abacus computation. Practice computation skills, get help with each step as needed, and verify the correct answer.