ArtEdventures from Sanford
This site from the Sanford Company (they make pens and markers) has lots of art games like Go West, Young Artist, Leonardo's Workshop, and the Art of Crime Detection that explore art concepts and history. You will also find an art glossary and artist biographies. There is also a section with lesson plans.
Intended Audience: Students Reading Level: Elementary/Middle School Teacher Section: Yes Searchable: No

Destination Modern Art
This interactive site from the Museum of Modern Art in New York features a variety of interactive demonstrations and activities.
Intended Audience: Students Reading Level: Elementary School Teacher Section: No Searchable: No

The Art Room
Lots of art activities, artwork from kids around the world, info about famous artists, and more. 
Intended Audience: Students Reading Level: Elementary School Teacher Section: Yes Searchable: No

A Brush With Wildlife
Learn how to create wildlife art with artist Carl Rungius. Learn about basic art principles like balance, contrast, movement, pattern, and proportion with an animated gallery or visit the Composition Studio to see how a work is created. You can even create and submit your own wildlife art in the studio using what you have learned!
Intended Audience: Students Reading Level: Elementary/Middle School Teacher Section: Yes Searchable: No

The Crayola Homepage
Find out how crayons are made, check out some crafts, or play a game.
Intended Audience: Students Reading Level: Elementary School Teacher Section: Yes Searchable: No

Eyes on Art
You will find art activities that will help you explore art, including an exploration of art styles, and an art expert's quiz.
Intended Audience: Students Reading Level: Elementary School Teacher Section: Yes Searchable: No

Global Children's' Art Gallery
Look at art work from kids around the world.  You can even submit a picture of your own.
Intended Audience: Students Reading Level: Elementary School Teacher Section: No Searchable: No

Mark Kistler's Imagination Station
Check out the drawing lessons, look at work by other kids, or send in your own work.
Intended Audience: Students Reading Level: Elementary/Middle School Teacher Section: No Searchable: No

Building Surprises
Learn about the architectural design process at this site from the Weisman Art Museum. You can explore this building designed by Frank Gehry and learn about the design process. You can also learn more about Frank Gehry who also designed the Guggenheim Museum Bilbao and the new Walt Disney Concert Hall in Los Angeles.
Intended Audience: Students Reading Level: Elementary School Teacher Section: Yes Searchable: No