The Smithsonian Institution is is a special gem. Founded in 1846, it has provided inspiration and resources for literally generations of Americans and international visitors. Now, many of the Smithsonian's resources are available on-line.
In honor of its 150th birthday the Smithsonian has updated its site--possibly to include as many as 10,000 pages. The Educate URL houses teacher resources, coordinated with its exhibits and tours. Adobe Acrobat is needed for this URL. The Smithsonian Magazine is now online for your perusal. Stop by...
The Smithsonian may be of particular interest to history and science educators. The Smithsonian even has prepared a site in which math and American history are "integrated". Exhibits change regularly so you might check the site every few months to see what's new.
A little know fact about the founding of the Smithsonian...
It all started in 1826 when James Smithson, a British scientist, drew up his last will and testament, naming his nephew as beneficiary. Smithson stipulated that, should the nephew die without heirs (as he would in 1835), the estate should go "to the United States of America, to found at Washington, under the name of the Smithsonian Institution, an establishment for the increase and diffusion of knowledge among men."
It took another 20 years (until 1846) for the Smithsonian to become a reality.