Grade 3 - 5

The atmosphere is what makes life on Earth possible. Explore more about this important piece of our planet with content tied to the curriculum of upper-elementary and middle school students… More →

The circulatory system is the body's roadway. It transports blood to deliver nutrients and oxygen throughout the body while sweeping away waste. Explore more about this important body system… More →

The circulatory system is the body's roadway. It transports blood to deliver nutrients and oxygen throughout the body while sweeping away waste. Explore more about this important body system… More →

It was a battle that divided the country in a painful war. But what were the causes and who were the key players of the Civil War? Explore the battle between North and South with… More →

Almost as soon as the dust settled on World War II, the Cold War scorched with a different kind of intensity. But what were the United States and Soviet Union facing off about? And if they… More →

It's always in action, but what do you know about the digestive system? It breaks down food, taking away the valuable nutrients we need while getting rid of the waste we don't. Explore more… More →

The United States Constitution contains the rules of the nation. It says how the government should run. But how did it come to be? Learn about the creation of our nation's systems with… More →

Winds whipped dark clouds of dust across the dry, open croplands of the Great Plains. How did this tragedy begin and what took the country through the worst of this extreme drought in the… More →

Voting is an important part of our democratic process. But what do you know about the unique way the United States elects presidents and vice presidents? Learn all about the electoral… More →

The Great Depression plunged the United States into years of uncertainty that challenged the whole country. Discover the causes of the depression, how the people of the world were impacted,… More →

What do Earth's atmosphere and a glass-covered building have in common? Both can keep things hot! Explore the greenhouse effect with easy-to-understand content tied to the curriculum of… More →

The House of Representatives makes laws for the people they represent. But what do you know about the Lower House? Explore how representatives make ideas into bills and eventually laws, what… More →