Explore a model environment which emulates the basic workings of a bio-regenerative system. The purpose of this project is to demonstrate advanced life support systems essential for future Mars self-sustaining environments.

Lewis and Clark National Historic Trail is approximately 4,900 miles long, extending from Pittsburgh, Pennsylvania, to the mouth of the Columbia River, near present day Astoria, Oregon. It connects 16 states. Today, visitors can follow...

In the spring of 1942, just months after the bombing of Pearl Harbor, more than 100,000 residents of Japanese ancestry were forcefully evicted by the army from their homes in Washington, Oregon, California, Arizona and Alaska, and sent...

Worlds of Ursula K. Le Guin tells the intimate coming-of-age story of the Portland, Oregon, housewife and mother of three who forever transformed American literature by bringing science fiction and fantasy into the literary mainstream....

Specific gravity and density are defined and explained.

This lesson on rational functions has a section on finding the domain which includes an example problem.

Visit this summary of friction. Use the interactive JAVA window to run friction simulations.

This resrouce presents instructions for using nine easy to obtain materials for making crystals. The lab takes about 24 hours and it contains a brief explanation of how crystals form.

The process and benefits of freze-drying foods is discussed. The application of sublimation principles to the process is explained and illustrated.

An overview of the Oregon Boundary Treaty of 1846, which set the boundary between British North America and the United States at the 49th parallel. Information on the treaty, the personalities involved, relevant images, and a map are...

A map from 1919 of Portland, Oregon and surrounding vicinity, showing the Willamette and Columbia rivers, county lines, railroads, and neighboring cities and towns.

This in-depth resource presents a history of the American West from pre-Columbian times until World War I with profiles, documents, and images. It encourages visitors to link these into patterns of historical meaning for themselves....

Written in 1859, this handbook provided pioneers with valuable guidance on everything from choosing which route to gake to the west, to what kinds of tents to use, to how to deal with Indians. It was an invaluable source for those making...

Excellent site outlining each step for Internet research for grades 6-12. This site focuses on writing a research paper from selecting a topic through to the final paper. Click on Cite My Sources to get the electronic citation machines....

Check out this amazing interactive site that shows you primary documents outlining the 17th amendment proposal (click on any document) for popular election of senators, provided by the National Archives and Records Administration (NARA).

See this map drawn by William Clark of where the men from the Corps of Discovery found the whale which the Tillamook Indians told them about. From PBS.