Explains how leaves change their colors in autumn and then separate from the tree as the tree prepares for winter.

Explains the processes by which a hamburger and other foods are used to make energy, strong bones, and solid muscles as they pass through the digestive system.

A lively introduction to the rainforest combines illustrations and diagrams with explanations about the abundant plant and animal life that can be found there.

"Winds whip. Waves crash. Rain pours down. A superstorm moves across the ocean and gets closer and closer to land. Hurricane watch! Read and find out how hurricanes form, how scientists track the storms, and what you can do to keep yourself safe if one strikes. With colorful illustrations from Taia Morley and engaging text from Melissa Stewart, Hurricane Watch is a look into a powerful natural disaster"--

Machines are everywhere! They help make work easier, like when you need to lift something heavy or reach way up high. Some machines are so simple that you might not think of them as machines. There are six simple machines: the lever, the wheel and axle, the pulley, the ramp, the wedge, and the screw. Can you adjust a seesaw to lift an elephant? What happens when you combine two or more simple machines? Read and find out!

You are lying in bed listening to the soft sound of rain. It has been coming down for hours. Now something is changing. The rain sounds harder and louder, and there is water running down the road, which looks like a small river. What is happening? You are hearing and seeing the start of a flood. Read and find out about the different kinds of floods, how they start, and how to stay safe. With colorful illustrations from Amy Schimler-Safford and engaging...

Let's-Read-and-Find-Out about Garbage People in the United States make more trash per person every day than people in any other country. What do we throw away, and where does it go? How can we reduce, reuse, and recycle? Read and find out!

The earth-and everything on it-needs water. But lately, it's been unusually sunny, warm, and dry. The weather anchor announces that your area is experiencing a drought! Where do droughts happen? How do we know that we are in a drought? Why is rainfall important? Do droughts just affect people? Can scientists keep track of rainfall? Read and find out! This book is full of activities, like how to measure rainfall, how to visualize how much of the...

Everyone knows that Tyrannosaurus rex is the huge dinosaur with sharp claws and tiny arms. But in this appealing level 2 picture book from acclaimed science writer Melissa Stewart, you'll learn that T. rex is not the only tyrannosaur that existed in prehistoric times. In the last fifteen years, scientists have found many tyrannosaurs, including one with a really long pointy nose. The New York Times bestselling coauthor of this book, Dr. Steve Brusatte,...