Grade 7

The United States government is strong. But no single person has all that power. What do you know about checks and balances? Discover the roles of the three branches of government, how their… More →

A flickering flame and the smoke curling from a burnt out candle have a lot in common. They are both signs of a chemical reaction. Learn all about the reactions from the smallest atomic… More →

The world around us is full of elements. Many of them are necessary for life, and many more can be put to use. Which ones and how? The answers are found in the science of chemistry. This… More →

From the composition of rocks and minerals to the constant changes happening in the human body, chemistry is all around us. Every day, scientists study nature and explore chemicals within… More →

Chemistry can make our world better. Farmers use special chemicals to help grow bigger and more nutritious crops. Chemists create new medicines that treat illnesses and pain. From plastics to More →

China, with over one billion people, is the most populated country in the world. China's most famous tourist attraction is the Great Wall, which runs across about 5,000 miles of northern… More →

Storming aboard a government trade ship, Ching Shih and her band of followers demand payment--or else! The traders soon come to fear Ching Shih, paying her for passage through the… More →

Your heart is racing, palms are sweaty, and you can't stop shaking. What is this feeling? It's fear! From creepy crawlers to speaking in front of a crowd, this series dives into a circus of… More →

Chicago was a rapidly growing city, connecting the country's coasts . . . until 1871 when it all burned to ash. Follow along with the true story of a doomed flame that changed the course of… More →

Throughout U.S. history, many groups of people have had to fight for their civil rights--and many are still fighting today. Black Lives Matter protesters work to bring safety to everyone… More →

Damaging storms, melting ice sheets, rising sea levels--the world is experiencing the results of serious climate change. But what is happening exactly? Bring Earth science to life with this… More →

From floods on coastlines to fires sweeping across forests, climate change is triggering extreme weather events that are making more and more land unlivable. Many of the people impacted by… More →