Grade 4

It was the Freedom Summer of 1964. Civil rights workers Mickey Schwerner, Andrew Goodman, and James Chaney were driving through rural Mississippi. When a police cruiser flashed its lights… Read More →

In 1944 during World War II, US and British engineers built a massive floating harbor. When soldiers from these countries landed in France to fight the Germans, ships towed the harbor to the… Read More →

Engineers and scientists have been developing AI since the 1950s, and it has come a long way since then! AI can now assist in everyday life, from self-driving cars to diagnosing illnesses and Read More →

Have you ever wondered how a set of batteries power the remote for your TV? Or have you ever wanted to examine the battery inside a car? Without batteries, we would not be able to power many… Read More →

Inquisitive kids will enjoy uncovering the fun facts of our solar system and beyond in How Big Is Outer Space? With easy-to-read text and full-color photographs, young readers will explore… Read More →

Everyone needs to eat, yet farming is a major cause of pollution around the world. But did you know that certain types of farming create less pollution than others? Or that some types of… Read More →

Fossil fuels such as coal, oil, and gas create many types of pollution. But did you know that scientists have found ways to limit the pollution's effects? Or that even small changes can… Read More →

Americans throw away millions of tons of waste at home every year. But did you know that much of this household waste can be recycled? Or that there are ways to turn this waste into energy?… Read More →

Factories create large amounts of pollution when making their products. But did you know that new technology helps factories significantly reduce the amount of that pollution? Or that… Read More →

Pollution from nuclear power plants can have extremely harmful effects on people, animals, and the environment. But did you know that scientists have made nuclear power much safer? Or that… Read More →

Vehicles such as cars, trucks, planes, and ships create much of the pollution in our environment. But did you know that engineers have developed cars that don't produce any pollution at all?… Read More →

From a president's veto to a Supreme Court decision on a law, learn all about checks and balances in the US government and how they help the US stay a democracy. Read More →

Have you ever wondered how electricity powers your home or school? What about how that electricity travels? In any device that uses electricity, inside is a small path called a circuit… Read More →

Did you know that trees, buildings, and even people can act as conductors for electricity? Or have you ever wondered why we're warned not to go outside during a thunderstorm? Scientists,… Read More →

Brrr! Coyote is always cold! That’s because it’s winter all year long. But Old Woman has something amazing called summer. It’s tied up in a little bag in her tipi. Coyote and his friends… Read More →

In the early 1800s, many black slaves in the southern states began to risk their lives to gain freedom in the North. They escaped from plantations with no money to buy food and no maps to… Read More →

On a cold evening in December 1773, a group of men climbed aboard three ships docked in Boston Harbor. Armed with hatchets, the men began breaking into the ships’ valuable cargo—342 crates of Read More →

From paramammals to dimetrodon, this book reveals amazing facts about the creatures that existed before the very first dinosaurs arrived. With amazing images and jaw-dropping facts, learn all Read More →

Artist and storyteller E. J. Bird describes the habits of hibernating bears in this endearing rhymed picture book. Children will wonder along with the author if bears dream, how bears stay… Read More →

How Does Your Brain Work? is a fantastic introduction to the science behind what goes on in your head. The brain, nervous system and senses are explained through hilarious, colorful… Read More →

Giving a speech doesn't have to be scary. Find out how to confidently give a speech and learn an amazing skill for life in this fun, friendly, and easy-to-follow guide. Full of great tips,… Read More →

Having to sit still and listen is not the most boring thing ever! Find out how to be an active listener and learn an amazing skill for life in this fun, friendly, and easy-to-follow guide.… Read More →

A student's social media shouldn't be stressful! Find out how to manage what’s online and learn an amazing, social-savvy, network-navigating skill for life in this fun, friendly, and… Read More →