National Network for Equitable Library Service

What do flagpoles and some window blinds have in common? They use pulleys to perform work! Pulleys are simple machines. They help us to do jobs more easily. But don't take our word for it.

Websites include all kinds of interesting information. But how can you tell if a site is trustworthy? And how do you discern advertising from news?

What you put on the Internet may stay there forever. So how can you protect your online reputation? What can you to do keep your identity safe?

The information you find online can sometimes feel overwhelming. Which online sources can you trust? How do you know which sites include the facts you're looking for?

A ball drops to the ground. Leaves fall from a tree. Gravity is at work all around you. But what exactly is gravity? And how does it affect different objects? Read this book to find out!

A baseball player slides on the ground to tag a base. A toy car's wheels rub against the floor and slow the toy car down. Friction is at work all around you. But what exactly is friction?

The digestive system is made up of the tongue, the esophagus, the stomach, the intestines, and other parts. But what does the digestive system do?

The author and illustrator of the best-selling Words Are CATegorical® series brings their trademark sense of humor to the subject of subtraction.

Panamanian golden frogs aren't just cute, little, and yellow. They're also the national symbol of Panama. But they started to disappear about fifteen years ago. What's killing them?

We all throw away too much stuff! Watch Tyler find ways to reuse his old things. Can you think of new uses for items you would have tossed? Do your part to be a planet protector!

On Earth Day, we find ways to help the Earth. Trina plants trees with her class. She forms an Earth Day club with her friends. What can you do to make every day Earth Day?

We use electricity and other types of energy every day. But did you know that some kinds of energy can make Earth dirty? Join Tyler to learn how we can use energy wisely.

Top-selling science author Sandra Markle presents the story of whale sharks-the largest fish on the planet.

Earth has a litter problem. How can you help? Join Trina to learn how little pieces of trash can become big problems. Find out safe ways to take care of litter.

Plastic: it's used to make everything from drink bottles and bags to toys and toothbrushes. But what happens when it ends up where it doesn't belong-like in the Pacific Ocean?