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is a free visual, video dictionary. Wordia features a selection of user-submitted and professionally created videos explaining the meaning of a word. The videos focus on the everyday use of words while the text accompanying each video provides the dictionary definition of the word. The video below explains the word literacy.

From web to desktop to full dome planetarium, WorldWide Telescope (WWT) enables you to explore the universe, bringing together imagery from the best ground and space-based telescopes in the world and combining it with 3D navigation. Experience narrated guided tours from astronomers and educators featuring interesting places in the sky. You can research and import your own data and visualize it, then create a tour to share with others."

Visuwords™ online graphical dictionary - Look up words to find their meanings and associations with other words and concepts. Produce diagrams reminiscent of a neural net. Learn how words associate. Enter words into the search box to look them up or double-click a node to expand the tree. Click and drag the background to pan around and use the mouse wheel to zoom. Hover over nodes to see the definition and click and drag individual nodes to move them around to help clarify connections. *It's a dictionary! It's a thesaurus! *Great for writers, journalists, students, teachers, and artists. *The online dictionary is available wherever there's an internet connection. *No membership required.

In the history of photography, the leap from film to digital was a breakthrough as profound as the move from black-and-white to color. Photosynth is the first photo site that really capitalizes on that shift, with a new way to look at pictures. Instead of arranging photos in a traditional album, the site finds relationships among pictures and digitally composites them to create an immersive 3-D photo environment called a "synth." The best synths - like this one pieced together from the Apollo moon-landing shots - look like David Hockney himself Read more: http://www.time.com/time/specials/packages/article/0,28804,1918031_1918016_1918005,00.html #ixzz1RRRull6M

Word web "It's an online interactive English dictionary and thesaurus that helps you find the meanings of words and draw connections to associated words. You can easily see the meaning of each by simply placing the mouse cursor over it."