DocsTeach, a National Archives and Records Administration project, recognizes the need to bring primary sources into your classroom. To assist in the effort, NARA has pulled together thousands of primary sources, as well as a selection of pre-made activities and tools for building your own primary-source-centric activities.

Documents offers exactly what it sounds like it would—primary sources. The sources are divided into chronological categories—Revolution and the New Nation, Expansion and Reform, Civil War and Reconstruction, Development of the Industrial United States, Emergence of Modern America, Great Depression and World War II, Postwar United States, and Contemporary United States. Results can then be narrowed further by selecting audio/visual, charts/graphics/data, image, map, or written document. If you prefer, you can use a keyword search. All search results are shown with thumbnails to give you a small preview of the sources for your consideration.

Activities provides pre-made classroom activities. These require access to a computer, and are based on the same tools which the site provides for making your own activities. You can also sort them by historical thinking skill—chronological thinking, comprehension, analysis and interpretation, research capabilities, and issues-analysis and decision-making. Registering gives you access to a much larger collection, many of which are created by other educators. There is no registration cost.

If you're registered, consider making your own activity for use by yourself and others. There are tools which help students to create sequences, participate in analytical discussion, connect documents, geographically map documents, use documents to gain an understanding of the bigger picture, weigh evidence, and examine source context.

Take a moment to peruse the Teacher Resources as well. Here, you can find information on national history standards, using DocsTeach activities in the classroom, Bloom's taxonomy, and the National Council of Social Studies.

Read our Digital Classroom article on DocsTeach for more detailed information on using the site.

The Central Intelligence Agency (CIA) has digitized thousands of formerly secret documents declassified to comply with Freedom of Information Act requests.

Keyword search capabilities are provided for the complete site. In addition, there are eight collections designated as "frequently requested records" that total nearly 8,000 documents. These collections cover a number of Cold War topics: CIA involvement in the 1954 coup in Guatemala; convicted spies Ethel and Julius Rosenberg; the 1961 Bay of Pigs affair; and two well-known espionage incidents.

Additional topics include POW MIAs in Vietnam, human rights abuses in Latin America, and UFOs. A disclaimer notes that some material cannot be disclosed due to national security laws, and released pages often have material deleted or blacked out. Still, the material offered is voluminous and useful for studying Cold War foreign policy and military history.

The Texas Archive of the Moving Image (TAMI) hosts more than 1,000 streaming videos about Texas, shot by Texans, or created in Texas. Users who have appropriate footage, including home videos, can have their films digitized and added to the collection free of charge.

Of the four main navigational buttons, the one to pay attention to is "Teach Texas." This opens a page leading to lesson plans; information on how to implement TAMI resources in the classroom; collection browsing options; and "Documenting History," a documentary-making activity.

Lesson plans can be browsed by grade level, starting with a K-3 category, or by general topic. Specific topics covered include the 1900 Galveston hurricane; 20th-century business; oil; Japanese, Italian, and German internment in World War II; festivals; cattle; the Dust Bowl; the aerospace industry; Lyndon B. Johnson and civil rights; the Vietnam War; the World War II home front; and Gulf Coast hurricanes. Lesson plans are structured, offering, for example, objectives; lists of useful prior knowledge and/or activities to engage said knowledge; hooks; the activity itself, including films to watch, questions to address, and readings to complete; worksheets; resources; and lists of Texas state standards.

Using Archival Film in the Classroom holds best practice suggestions for preparation prior to class, in class (before, during, and after a film viewing), and further resources on using film to teach.

Documenting History is a multi-day lesson plan, which culminates in group documentaries discussing local people, events, or items. While the idea is to collect Texas history, the plan can easily be implemented elsewhere without the possibility of adding the videos to the TAMI. In addition, the plan includes information on free video editing software, so, while there are equipment requirements, you do not need your school to possess expensive editing software to put the plan into action.

Finally, Curated Collections offers video sets on home movies, Lyndon B. Johnson, Austin television, local films, Texas and the Vietnam War, Speakers of the Texas House of Representatives, and the U.S.-Mexico frontier.

This vast collection of more than 275,000 digitized images sheds light on many aspects of 20th-century life in Los Angeles, especially the entertainment industry, politics and public issues, and suburban life. The collection is especially strong in images depicting the growth of LA from the turn of the century through its growth spurt between 1920 and 1939, including a series of promotional images designed to attract Midwesterners and east coast businesses to "the City with Promise."

The sheer quantity of photographs—including churches, municipal buildings, streets, and homes—allows users to track the evolution and growth of LA neighborhoods, making this collection especially useful for urban history courses. The collection also includes more than 10,000 photographs drawn from the family albums of a diverse group of Los Angeles residents.

Images can be accessed through a keyword search and limited by date range, though browsing is not yet available. In addition, users can add images to a "personal list" which can then be sorted by author, title, or call number and emailed/printed.

A project of the Historical Society of Pennsylvania, PhilaPlace explores the history of two neighborhoods in Philadelphia—Old Southwark and the Greater Northern Liberties—historically home to immigrants and the working class. Using an interactive map and more than 1,240 primary sources and audio and video clips, visitors to the site may navigate the neighborhoods and learn more about their development from 1875 to the present day.

Visitors may navigate the interactive map using filters found under two tabs to the left of the map: "Places" and "Streets."

Under "Places," click on marked points of interest to bring up photographs or audio or video clips describing the history of the location. These points of interest may be filtered by 14 topics (such as "Food & Foodways," "Education & Schools," and "Health") or by contributor (the Historical Society of Pennsylvania, its partners, or visitors to the site). The map may be set to show the city's streets in 1875, 1895, 1934, 1962, or the present day—note that points of interests from all time periods appear on all maps. Two virtual tours through the points of interest are available, one for Greater Northern Liberties/Lower North and South Philadelphia.

Under "Streets," visitors can view demographics for four streets—S. 4th St., S. 9th St., I-95, and Wallace Street—from 1880-1930. Buildings on each street are color-coded to show land use, the number of residents per building, and the ethnicity and occupation of each building's residents.

Collections allows visitors to search the more than 1,240 primary sources and audio and video clips available on the site. Filter them by topic, neighborhood, type, or contributor.

The site's blog presents mini-features on certain locations, notifications of updates, and information on professional development and other PhilaPlace-related events. Educators provides a timeline for each of the neighborhoods and four suggested lesson plan/activities, while My PhilaPlace lets visitors create free accounts and save favorite materials to them—or create their own up-to-25-stop city tour. The Add a Story feature allows visitors to tag locations on the maps with their own short descriptions or memories (up to 600 words long), and accompany them with an image or audio or video clip.

Attractive, interactive, and accessible, PhilaPlace may appeal to Pennsylvania educators looking for a tool to help students explore urban history.

Currently provides 22 census data samples and 65 million records from 13 federal censuses covering the period 1850-1990. These data "collectively comprise our richest source of quantitative information on long-term changes in the American population." The project has applied uniform codes to previously published and newly created data samples. Rather than offering data in aggregated tabular form, the site offers data on individuals and households, allowing researchers to tailor tabulations to their specific interests. Includes data on fertility, marriage, immigration, internal migration, work, occupational structure, education, ethnicity, and household composition. Offers extensive documentation on procedures used to transform data and includes 13 links to other census-related sites. A complementary project to provide multiple data samples from every country from the 1960s to 2000 is underway. Currently this international series offers information and interpretive essays on Kenya, Vietnam, Mexico, Hungary, and Brazil. Of major importance for those doing serious research in social history, the site will probably be forbidding to novices.