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How has vaccination changed society? Learn about the history of disease ands prevention through interactive activities and games, articles, primary sources, & more w/the website The History of Vaccines. Click the word cloud to learn more!

Who are memorials and monuments designed for--and by? Historian C. Hamner introduces educators to the World War II Memorial in Washington, DC, and contrasts it with the Vietnam Veterans Memorial. Watch the rest of this three-part series at teachinghistory.o....

History can overwhelm students. Bring it back to human scale with specific artifacts and individual stories, suggests C. Chavarria of the U.S. Holocaust Memorial Museum. Watch more at teachinghistory.o... !

(Photo, Washington, D.C. A sailor who left Woodrow Wilson High School in June, 1943, standing in front of the school's service flag, Esther Bubley, Oct. 1943, Library of Congress, ) What is the history of the service flag? you asked. We answered! Click the photo to read more.

(Detail, 1940 census, ED 76-1, NARA) Recently, the National Archives made the 1940 census available online. Click above for ideas for using these materials with students!

(Photo, World War II Memorial, Jun. 8, 2009, kittivanilli, Flickr, farm4.staticflick... ) Who effective is the World War II Memorial? What symbolism does it use? How does it compare to memorials like the Vietnam Veterans Memorial? Watch historians Christopher Hamner and Michael O'Malley model analysis of a memorial--click on the photo!

(Photo, New York, New York. Times Square and vicinity on D-Day, Jun. 6, 1944, Library of Congress, ) What do your students know about the invasion of Normandy in World War II? June 6, 1944 was "D-Day." PBS's American Experience website has primary sources on the invasion. Click above to learn more!

(Poster, No days are bookless days! Poughkeepsie asks you to do your part and part with your books for our boys, 1918, Library of Congress, ) Looking for historical fiction set in the years from the beginning of World War I to the end of World War II? Check out these 11 recommendations. Click the poster!

(Photo, School children, Manzanar Relocation Center, California, Ansel Adams, 1943, Library of Congress, ) What can you learn from analyzing this photograph? Try your hand at analyzing a visual primary source with this quiz from Click above to take it!

(Photo, Emperor Hirohito and General MacArthur, at their first meeting, at the U.S. Embassy, Tokyo, Sept. 27, 1945, Gaetano Faillace, U.S. Army, Wikipedia, ) Give your students a peek into the decisions behind this famous photograph with a quiz. Click the photo above!

(Photo, Japanese enlistment..., Mar. 1943, U.S. Office of War Information, Library of Congress, Though many Japanese American men answered the draft in World War II (such as the men in this image), others resisted, protesting the internment camps their families had been sent to. Click to read our review of the PBS site Conscience and the Constitution, about these resisters.

(Photo and caption, Photograph, Jerome Relocation Center, Denson, Arkansas., NARA, ) Life Interrupted: The Japanese American Experience in WW II Arkansas, from the University of Arkansas at Little Rock, gives a glimpse into the lives of Japanese Americans in Arkansas internment camps.

(Photo, Wedding Rings Removed by the Germans from Holocaust Victims, May 5, 1945, Department of Defense, NARA, NAIL Control Number: NWDNS-111-SC-206406 ) Construct an understanding of the Holocaust using photos, in this lesson plan from the U.S. Holocaust Memorial Museum. Click above!

(Poster, Books wanted for our men in camp and over there; take your gifts to the public library, c.1918-1923, C.B. Falls, Library of Congress, ) You asked us, "Can you suggest any literature covering World War I to World War II that my 10th-grade world history class can read?" Click the poster to see how we answered!

Each year, the Days of Remembrance of the Victims of the Holocaust ask us to remember history and to take action to prevent genocide today. How did the U.S. react to the Holocaust during World War II? Website reviews, primary sources, teaching strategies, and more on's spotlight page!

(Photo: Holocaust Memorial, Miami Beach, Florida, c.1980-2006, Carol M. Highsmith, Library of Congress, ) Looking for resources to teach the Days of Remembrance of the Victims of the Holocaust? Click to learn more about materials from the U.S. Holocaust Museum, courtesy of

More than 70 years ago, on December 7, 2011, Japanese planes attacked Pearl Harbor, HI. What do your students know about the "date that will live in infamy?" Expand their knowledge with! Explore teaching strategies, primary sources, contextual materials on World War II, and more.

(Photo, Second atomic bombing of Nagasaki, 1945 August, LOC, ) Is it possible to discover the true story behind the decision to drop the atomic bomb? we asked a historian. He looks at what textbooks, historians, and primary sources have to say in this "Beyond the Textbook" feature. Click the image to check it out!