Classroom Materials

The U.S. Army adopted the telephone as soon as it was invented, using it in the Spanish-American War. In 1917 General Pershing asked the War Department to recruit women to serve overseas as telephone...

Armies used codes and ciphers to send secret messages back and forth during World War I. One of the most successful use of codes during the war was with a group of 14 Choctaw Indians soldiers from...

This video webcast series from Smithsonian National Air and Space Museum creates an interactive classroom program consisting of 30-minute webcasts that engage middle school students in STEM topics...

Balloons were used in war as early as the American Civil War, but the invention of the dirigible, a steerable airship, opened up the possibilities of this new technology. The German Army and Navy...

The Zimmermann Telegram was a major factor in the U.S. decision to join the Allies in World War I. Using this lesson, students will analyze the context of the telegram from the perspectives of the U.S...

The Wall Street Journal has collected a list of "100 legacies that still shape our lives today." From chemical warfare and guided missiles to blue doctors' scrubs and Pilates, the First World War...