vision

Illustrations and rhyming text help children discover two languages while learning about the sense and sensation of sight. Presented in English and Arabic.

Illustrations and rhyming text help children discover two languages while learning about the sense and sensation of sight. Presented in English and Urdu.

An introduction to the sense of sight.

Illustrations and simple rhyming text describe what a child sees around the house and garden.

Explains the science behind how sight occurs, discusses the links between light, sight, and the brain, examines the phenomena of optical illusions, looks at some of the things that can go wrong with vision, and examines ways to protect the eyes.

Photographs and simple text teach young readers about the sense of sight. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

Photographs and simple text teach young readers about the sense of sight. Includes audio, videos, activities, weblinks, slideshows, maps, quizzes, and supplementary resources.

Describes the physical construction of the eye, the principles of vision, various eye abnormalities, and how to take good care of one's eyes.

An introduction to the eye using detailed illustrations and text.

Before magnifying glasses, how did people make objects look larger? The ancient Romans filled glass bowls with water. Then microscopes and telescopes came along. But optical innovation didn't stop there. Learn how many lightbulb designs Thomas Edison tested, how spies used microfilm to carry secret messages, how satellites let us look at Earth from space, and more! Follow the trail of inventions and devices that have enabled us to see everything from distant stars to tiny cells.