kidsthinkdesign - a kids design collaborative project

http://www.kidsthinkdesign.org/architecture/design.html

 

archKIDecture - encourages visual literacy and explain math, science, and visual art concepts through architecture.

http://archkidecture.org/learn/

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Nat Geo Kids - science adventures through reading, playing games, and watching videos.

http://kids.nationalgeographic.com/

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How Stuff Works - get answers to your questions about how the world works.

http://www.howstuffworks.com/