Science & Nature

Earth has a pollution problem. How can you help? Join Tyler to learn what makes Earth's l...

Earth has a trash problem. How can you help? Join Tyler in learning about recycling. Find...

Earth has a water problem. People need water to live. But only a little of Earth's water ...

Compare different types of scales and discover how they protect the bodies of fish and re...

Day follows night. Night comes after day. What makes this cycle of days and nights happen...

From lakes, to clouds, to rain that falls back to Earth—discover how water changes ...

Hibernation is a cycle that some animals go through every year. Most people know that bea...

What does it mean to migrate? Discover which animals migrate and why they migrate through...

Every month a cycle happens in the sky. Read about the patterns of the moon and how it ch...

Winter, spring, summer, and fall—the seasons are one of natures most familiar cycle...

Why do plants have flowers? Readers will discover how flowers can develop into fruits, ve...

What do leaves do? Students will learn how leaves use air, water, and sunlight to make fo...

Why do plants need roots? Learners will see how roots take in water, anchor plants to the...

What are seeds? Young readers will observe how seeds turn into plants and how seeds are d...

What do stems do? Kids will see how stems are like straws, moving water and food througho...

A colorful magnet holds a drawing to a fridge. Paperclips stick to a magnet. Magnetic fo...

You push a swing. Your brother pulls a wagon. Forces are at work all around you. But what...

An airplane soars through the sky. A wind gust blows through the leaves. Objects are in m...

A rock sinks in the water. A hot air balloon floats in the air. Many objects float and si...

A ball drops to the ground. Leaves fall from a tree. Gravity is at work all around you. B...

A baseball player slides on the ground to tag a base. A toy car's wheels rub against the ...

Clouds drift and float. They move above Earth. Sometimes they are white and puffy. Someti...

Plip! Plop! Sometimes rain drips softly from the clouds. Sometimes rain comes down hard i...

Snow swoops and swirls. It drifts from the sky and blankets the ground. People bundle up ...

The sun glows and glimmers. It casts warm light on the land and seas. Sunlight helps plan...

Wind is moving air. Sometimes it blows softly. Sometimes it whips and whooshes. Wind push...

What do staircases, dump truck beds, and ramps have in common? All of them are inclined p...

What do hammers, wheelbarrows, and brooms have in common? All of them are levers! Levers ...

What do flagpoles and some window blinds have in common? They use pulleys to perform work...

What do jar tops and water-bottle lids have in common? Both of them are screws! Screws ar...

What do a doorstop, a butter knife, and the front of a boat have in common? All of them a...

What do bicycles, doorknobs, and screwdrivers have in common? All of them use wheels and ...

The circulatory system is made up of the heart, the blood, and strong tubes called blood ...

The digestive system is made up of the tongue, the esophagus, the stomach, the intestines...

The muscular system is made up of three different kinds of muscles: skeletal muscles, smo...

The nervous system is made up of the brain, the nerves, and the spinal cord. But what doe...

The respiratory system is made up of the nose, the throat, the lungs, and other parts. Bu...

The skeletal system is made up of about two hundred and six bones. But what exactly is a ...

What space objects can have millions of times more mass than our Sun, but they remain inv...

Have objects from space ever hit Earth? Yes! Every day small meteoroids crash into the at...

Could there be other planets in the universe similar to those in our solar system? Yes! S...

How can robots help us explore space? A probe called New Horizons is zooming through the ...

How long does it take to get into outer space? About nine minutes! Powerful vehicles carr...

What’s longer than a football field, weighs more than 450 cars, yet flies miles abo...

Simple text and photographs present many kinds of gardens.

Simple text and photographs present animals found in gardens.

Simple text and photographs present garden tools and how they are used.

Simple text and photographs present an overview of growing a garden.

Visit a city in Chile that went without rain for 14 years. Travel to places where less th...

Visit the world’s highest waterfall. Find out where North America’s highest c...