Grade 6 - 9

The president makes sure everybody follows the laws. They are responsible for keeping the federal government moving. But what do you know about this important office of government? Explore… More →

With elements all around, how can students--or even scientists--keep them straight? That's where the periodic table comes into play. Learn all about the way the table is organized, the… More →

The respiratory system helps the body take in the oxygen it needs to survive. A branching network of tubes takes oxygen into the lungs to get the job done. Explore more about this important… More →

American colonists were sick of following the rules of a government across the ocean. So, they fought back in the Revolutionary War. Learn about the war that changed history with… More →

China has some of the oldest history on Earth. But what do we know about the people, dynasties, and wars that shaped this ancient civilization? Explore more about the rise and fall of ancient More →

Everybody has heard of the pyramids and mummies of Egypt. But what do we really know about the people, rulers, and conflicts that shaped this ancient civilization? Explore more about the rise More →

Greece was once one of the most prominent civilizations in the world. What led to its impressive power and amazing accomplishments? Explore more about the rise and fall of ancient Greece with More →

The Roman civilization lives on in our daily calendar and even the way we speak. But what do we really know about the military leaders, political structure, and ultimate demise of this… More →

Travel back to the cradle of civilization to see how the first advanced communities took shape in Mesopotamia. From creating systems of writing and mathematics, to the advent of the wheel,… More →

Long ago, a powerful civilization formed deep in the middle of a lush forests. The incredible Maya had advanced knowledge of math, astronomy, and even written languages. Explore more about… More →

From the tops of tall mountains to the rocks in the ground beneath our feet, rocks are always changing. How do they do this? Follow along with the different ways rocks form and find out what… More →

The Upper House makes laws that affect everybody in the United States. But what do you know about the Senate? Learn how senators take ideas for bills and turn them into laws, what it takes to More →