Minerals Under the Microscope
This website provides an easy-to-understand introduction to the basics of optical mineralogy. Topics include the polarized light microscope, mineral shape and cleavage, relief, color and pleochroism, interference colors, extinction angles, twinning, opacity, vibration directions and mineral identification. The site features short, clear descriptions accompanied by photographs and drawings. This website would be useful as a concise introduction to the use of a petrographic microscope in identifyi
Plate Tectonic Movement Visualizations
This collection provides a wide array of visual resources and supporting material about plate tectonic movements. Visualizations include simple animations, GIS-based animated maps, paleogeographic maps and globes, and numerous illustrations and photos. This collection is not exhaustive but does represent some of the best sources for teaching. Resources can be incorporated into lectures, labs, or other activities.
Mountains and Mass Wasting
This lecture discusses physical and chemical processes that break down rocks and rock debris transportation mechanisms. Physical weathering includes abrasion, fragmentation, frost wedging, and thermal expansion and contraction. Chemical weathering includes solution, oxidation and hydration, and hydrolysis. The lecture notes are supported by images such as photographs, satellite photos, and diagrams depicting glacial features and frost wedging.
At a Crossroads: The King of Prussia Inn
recounts the history of this inn, built originally as a farmhouse in 1719 at an intersection of two roads northwest of Philadelphia, not far from Valley Forge. The inn provided hospitality to travelers when the colony was just a scattering of farms. In part because of its location, it became a prosperous tavern, inn, and social center for the evolving community of the same name.
An American Success Story: The Pope House of Raleigh, NC
tells the story of Manassa Pope, the first black man to receive a medical license in North Carolina (1886). After practicing medicine and helping establish a drug store and insurance company in Charlotte, Pope moved his family to Raleigh. There he continued his medical practice, built an elegant house (equipped with the latest technologies) located in the best place allowed for a black family in a segregated city. He later ran for mayor.
Our Shared History: African American Heritage
tells about the Underground Railroad, African Americans in the Civil War, historic places of the civil rights movement, the Delta blues of the Lower Mississippi Valley, and landmarks dedicated to Booker T. Washington, Martin Luther King, and Frederick Douglass.
The Battle of Bentonville: Caring for Casualties of the Civil War
shows how battlefield medical care developed during the Civil War, particularly in the Union Army.
National Register Travel Itineraries
can help families explore historic places in the U.S. Each itinerary describes historic places and their importance, and provides maps, photos, and tourist information. Find itineraries for learning about Civil War battles in Virginia, the Lewis and Clark Expedition, maritime history, women's history, civil rights movement, Florida shipwrecks, the Southwest, Amana Colonies, Ohio and Erie Canal, Detroit, the California coast, Washington, D.C., and more.
National Mall and Memorial Parks
provides information about the Washington Monument, the Lincoln Memorial, the Jefferson Memorial, Ford's Theatre, the Franklin Roosevelt Memorial, the Korean War Veterans Memorial, the Vietnam Veterans Memorial, and more.
Maritime History of Massachusetts
This is is a travel itinerary highlighting 89 historic places that tell the story of Massachusetts' relationship with the sea. Read essays about lighthouses and lifesaving stations, ships and shipbuilding, the U.S. Navy, and maritime commerce.
Gran Quivira: A Blending of Cultures in a Pueblo Indian Village
can help students understand daily life and how it changed for the Pueblo Indians of Gran Quivira, the largest of the three Salinas pueblos located in central New Mexico.
Fort Morgan and the Battle of Mobile Bay
presents firsthand accounts, maps, and more pertaining to this Civil War conflict (August 5, 1864) in which Union Admiral David Farragut led about 20 ships and vessels into the torpedo-filled Mobile Bay.
Early History of the California Coast
is a travel itinerary that highlights 45 historic places that help tell the story of Spanish colonization of California. Learn about forts, churches, adobe houses, historic districts, and other places. Find out about the Presidio, which was established in 1769 as the base for Spain's colonization efforts and was the first permanent European settlement on the Pacific Coast.
Boston's Arnold Arboretum: A Place for Study and Recreation
provides readings, maps, and lesson ideas about the first arboretum in the U.S., which opened to the public in the 1880s. This site, though focused on a place devoted to the study of trees, can help students learn how 19th-century urban conditions influenced the development of parks and how to research the history of parks in their own communities.
Bethlehem, Pennsylvania: A Moravian Settlement in Colonial America
looks at this area (along the Lehigh River) that became the center of industry and community for Moravians, a Protestant group that migrated to colonial America seeking opportunity and the chance to spread their religious beliefs.
The Lewis and Clark Expedition: Documenting the Uncharted Northwest
recounts the expedition's crossing of the Lemhi Pass and Lolo Trail, and the time spent at Fort Clatsop near the Pacific Ocean. Although the Corps of Discovery did not realize its dream of finding a water route to the Pacific Ocean, the expedition overcame many obstacles and dangers to open the Northwest to the influence of the U.S., established relations with American Indian tribes, and gathered useful scientific documentation.
The Great Chief Justice at Home
offers photos of John Marshall's residence in Richmond, Virginia. This website also describes how Marshall, who wrote 519 opinions in his 34 years as chief justice (1801-1835), transformed the Supreme Court from obscurity into a prominent, powerful institution.
The Battle of Horseshoe Bend: Collisions of Cultures
looks at the decisive battle of the Creek War (1813-1814), where Andrew Jackson fought 1,000 American Indian warriors who were trying to regain autonomy. It examines the history of the battle and provides maps, images, and readings.
Ohio and Erie Canal National Heritage Corridor
is a travel itinerary of 50 houses, farms, churches, historic districts, and other sites. Learn about the first organized American settlement in the Northwest Territory (1772) and the history and impact of canals and railroads. Read essays on transportation, ethnicity, industry, and preservation.
Iron Hill School: An African-American One-Room School
is a curriculum-oriented guide focusing on a school constructed in 1923 in a rural area of northern Delaware, one of more than 80 schools for African-American children built between 1919 and 1928 as part of philanthropist Pierre Samuel du Pont's Delaware experiment. The site shows photos, maps, and diagrams about the school itself and suggests student activities ranging from philanthropy to school architecture.