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UUorld
Explain the world with Maps:  A map-making and data-visualization tool.

10 Sites to Learning Something New in 10 Minutes at Day
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Chirbit
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SafeShare.Tv
Not only does SafeShare.TV remove distracting and offensive elements around YouTube videos, but it also allows you to crop videos before sharing them.

http://del.icio.us

How often do you organize your favorites in Internet Explorer or even remember what you bookmarked? If you are like most, your bookmarks/favorites could use some organization and pruning.

Del.icio.us is a “social bookmarking manager which allows you to bookmark a web page and add tags to categorize your bookmarks.”

Not only does delicious keep track of your favorite sites, it allows you to see how others have categorized (tagged) the same links. You can then view users’ links and
discover other websites that may be of interest to you.

How teachers are using Delicious:

“I pick sites that support my curriculum and students can go and explore the sites if they are having trouble with a concept in class.”

“Students keep track of online articles used during a research project.”

“Create a class delicious page for students to post helpful sites.”

Del.icio.us tutorial: http://www.library2.0.ottergroup.com/blog/_archives/2006/2/19/1772390.html