- Lesson Plan (129)
- Distance Learning (19)
- Field Trips (15)
- Student Activities (10)
- Traveling Trunk (10)
- Teacher Reference Materials (4)
- Guest Speakers (3)
- Primary Sources (3)
- Media for Loan (1)
- Online Galleries (1)
- Other Education Materials (1)
- Teacher Workshops & Other Programs (1)
- Everglades National Park (8)
- Gateway Arch National Park (8)
- Salem Maritime National Historic Site (4)
- Timucuan Ecological & Historic Preserve (4)
- Women's Rights National Historical Park (4)
- Catoctin Mountain Park (3)
- Charles Young Buffalo Soldiers National Monument (3)
- Eisenhower National Historic Site (3)
- Fort Larned National Historic Site (3)
- Show More ...
- Social Studies (164)
- Literacy and Language Arts (82)
- Science (28)
- Math (7)
Showing 185 results for 20th century ...
Growing up in the 18th Century
- Type: Field Trips
- Grade Levels: Upper Elementary: Third Grade through Fifth Grade
Discover what it was like to be a child in the 18th century. This field trip takes place around The Dover Green.
George Washington Carver - An Original Conservationist: Welcome to the 21st Century
- Type: Lesson Plan
- Grade Levels: High School: Ninth Grade through Twelfth Grade

This activity will serve as the culmination to an ecological unit, especially those on current environmental problems. Students will take the role of George Washington Carver from 100 years ago. They will evaluate current ecological problems as if they were George Washington Carver. Their goal is to understand how the world has changed in the last century but also to recognize how solutions for today’s problems may have been around for decades and just need to be implemented.
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade

Both France and Spain raced to settle and control the southern coast of North America. On a small island off the coast of present-day South Carolina lie the ruins of Charlesfort, the French outpost for a year, which later became Santa Elena, a Spanish colonial town from 1566 to 1587. The site has been abandoned now for more than 400 years.
Commercial and Non-Industrial Occupations Post-Visit 2: Research Careers of Entrepreneurs
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade
Learn about the Boott Cotton Mills complex in Massachusetts, which contains mills built from the mid-1830s to the early 20th century.
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade
Learn about America's role in World War II and how US troops ousted the Japanese from Attu Island to gain control of the rest of the Aleutians.
Bryce Canyon National Park: Hoodoos Cast Their Spell
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade
Bathtub Time Machine
- Type: Distance Learning
- Grade Levels: Upper Elementary: Third Grade through Fifth Grade
Turning Water into Medicine
- Type: Field Trips
- Grade Levels: Upper Elementary: Third Grade through Fifth Grade
- Type: Distance Learning
- Grade Levels: High School: Ninth Grade through Twelfth Grade

When Dwight Eisenhower ran for president in 1952, the United States was embroiled in the Korean War. Eisenhower pledged, if elected, he would go to Korea and find a way to bring the fighting to an end, calling his mission a “crusade for peace.” This program will utilize primary sources such as speeches, historic photographs, and special artifacts in the Eisenhower NHS Museum collection to examine Eisenhower’s dedication to peace in his first year as president.
Ever-Changing Currents Mini-Lesson
- Type: Distance Learning
- Grade Levels: High School: Ninth Grade through Twelfth Grade
The Invention Factory: Thomas Edison's Laboratories
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade

The lesson could be used in teaching units on the industrialization of the United States, the development of science and technology, or social change in the United States in the late 19th and early 20th centuries. Students will discover how Edison systematized the process of inventing, allowing for the rapid development and production of inventions that improved the lives of millions of people.
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade
Learn about the Hoover Dam, located where the Colorado River forms the boundary between the states of Nevada and Arizona,
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade

Students will learn about the challenges that 19th- and 20th-century women faced when choosing a career path. They will then read a biography of Florence Hawley Ellis, one of the earliest American women to break into the male-dominated field of archeology. Este plan de clase con actividades incluido también está disponible en español.