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Leo teaches his cat Pallas all about circles by applying his knowledge of geometry to their Stone Age world. Engaging illustrations and stories provide a fun introduction to math concepts, including tangents, ellipses, and more. Information boxes...

Rivers are bodies of water that flow from high to lower places. They are found on every continent. Maps, diagrams, and exciting photographs help children learn where rivers begin and end, which rivers are the longest and deepest, and why these sources of...

This informative book looks at how different mountains are formed and where they are found on Earth. Maps, diagrams, and exciting photographs help young readers locate the biggest and longest mountain ranges on each continent. Children will also gain an...

Forests grow on every continent except Antarctica. Different kinds of soil and climate create different kinds of forests around the world. Maps, diagrams, and exciting photographs help young children locate different kinds of forests on each continent...

Deserts are very dry places that receive little or no precipitation. Using informative maps and engaging diagrams, this book looks at the major deserts on each continent including cold deserts at the poles, and the ways in which these deserts have formed...

Rivers are bodies of water that flow from high to lower places. They are found on every continent. Maps, diagrams, and exciting photographs help children learn where rivers begin and end, which rivers are the longest and deepest, and why these sources of...

This informative book looks at how different mountains are formed and where they are found on Earth. Maps, diagrams, and exciting photographs help young readers locate the biggest and longest mountain ranges on each continent. Children will also gain an...

Forests grow on every continent except Antarctica. Different kinds of soil and climate create different kinds of forests around the world. Maps, diagrams, and exciting photographs help young children locate different kinds of forests on each continent...

What is bioterrorism and how can the United States prepare and defend itself from this threat? Readers will learn about the history of biological warfare and terrorism--from ancient to medieval to modern times. Stories of a salmonella cult attack, a...

What is bioterrorism and how can the United States prepare and defend itself from this threat? Readers will learn about the history of biological warfare and terrorism--from ancient to medieval to modern times. Stories of a salmonella cult attack, a...

Cyber technology and counterterrorism are a hot topic today, and this book details how criminals, terrorists, and enemy governments attempt to use technology against the United States. How can we counter this threat? What training is our military and...

Cyber technology and counterterrorism are a hot topic today, and this book details how criminals, terrorists, and enemy governments attempt to use technology against the United States. How can we counter this threat? What training is our military and...

GPS technology is used in everything from car satellite systems to iPhones to FitBits. How does GPS actually work? Who takes care of the vast constellation of satellites that are needed to make these systems work? Enhanced with full-color photographs and...

GPS technology is used in everything from car satellite systems to iPhones to FitBits. How does GPS actually work? Who takes care of the vast constellation of satellites that are needed to make these systems work? Enhanced with full-color photographs and...

Students will meet a modern-day drone pilot and learn about the combat missions he performs. They will read about the history of UAVs, such as the use of pilotless balloons during the Civil War, and how these unmanned aerial vehicles, or UAVs, are used...

Students will meet a modern-day drone pilot and learn about the combat missions he performs. They will read about the history of UAVs, such as the use of pilotless balloons during the Civil War, and how these unmanned aerial vehicles, or UAVs, are used...

How high is a skyscraper? How deep is a pond? How high is your school? There are so many things to measure in the world around you. The concepts introduced in this book will help you perform exciting and fun experiments. Some will even give you ideas for...

How high is a skyscraper? How deep is a pond? How high is your school? There are so many things to measure in the world around you. The concepts introduced in this book will help you perform exciting and fun experiments. Some will even give you ideas for...

The chilly climate and thin air of the mountain biome adds an extra layer of danger to mishaps that occur at high altitudes. Shocking and triumphant true accounts of railroad wrecks, plane and helicopter crashes, and mountaineers who nearly met their...

Did your readers know that Johnny Depp once worked as a telemarketer trying to sell ballpoint pens? This lively biography summarizes Depp's life from his childhood, to his love of music, and his acting career. This fun-to-read book offers quotes,...

What's the largest gem in the world? A baseball diamond. Entertain your readers with more jokes, limericks, riddles, tongue twisters, and fun facts about different sports. A fun joke activity is included.

What kind of cat loves to bowl? An alley cat. Entertain your readers with more jokes, limericks, riddles, tongue twisters, and fun facts about different animals. Readers can also write their own joke book.

What color is a burp? Burple. Give your readers more jokes, limericks, riddles, tongue twisters, and fun facts about different science topics. They can also create their own funny board game.

What do you call a very small valentine? A valentiny. Give your readers more jokes, limericks, riddles, tongue twisters, and fun facts about different holidays. They can also create their own funny greeting card.

How do ghosts like their eggs? Terri-fried. Readers will learn more jokes, limericks, riddles, tongue twisters, and fun facts about different foods. They can also learn how to write their own knock-knock joke.

What does a moose get if he lifts weights? Moosles. Entertain your readers with more jokes, limericks, riddles, tongue twisters, and fun facts about different body parts. They can also learn how to write their own limerick.

Are your readers interested in cheerleading, but not sure how to get started? This book can help the beginner trying out for a cheer squad for the first time or the seasoned cheerleader participating in a competition. Includes a section on attending or...

When spirits are drooping, call on the cheerleaders. Author Lisa Mullarkey explains what spirit is, how to express it, and how to inspire it. Includes fun games, crafts, and practical suggestions for increasing spirit in your school or squad. Readers...

For those who have admired cheerleaders doing breathtaking moves, here's a book on how it's done. Author Lisa Mullarkey introduces a number of gymnastics moves, stunts and tumbles, with hints on how to be successful. The emphasis throughout is on fun,...

Could a paper towel put an electric charge on a ruler? What happens when you rub glass with silk? How do you find the north and south poles of a magnet? How does a battery really work? The exciting experiments in this book will unlock the mysteries of...

How does a tadpole become a frog? Follow each step in nature's cycle--from egg to adulthood--in this fascinating book!

How does an apple tree produce a tasty fruit? Follow each step in nature's cycle--from starting a new tree to eating a juicy apple--in this fascinating book!

How does sheep's wool turn into cozy clothing? Follow each step in the production cycle―from shearing a sheep to pulling on a warm sweater―in this fascinating book!Learn how a variety of objects are made or how nature's cycles work--from...

How is honey made from a flower? Follow each step in nature's cycle--from pretty bloom to tasty treat--in this fascinating book!

What is the executive branch? It's the part of government that's led by our president. But who else is part of the executive branch? And just what does this branch do? Read this book to find out.

What is the judicial branch? It's the part of government that's in charge of our courts. But just what do the courts do? And how do they affect your daily life? Read this book to find out.

What does it mean to be elected to political office? It means you get to decide how to make a town, a state, or even the whole country a better place to live. But how does someone get elected? And what are the challenges of running for office? Read this...

What are the Declaration of Independence, the Bill of Rights, and the U.S. Constitution? They're important documents that helped to shape our country. But what's the story behind how these documents were created? And what exactly do they say? Read this...

What is the legislative branch? It's the part of government that makes our country's laws. But just how does the legislative branch make a law? And what else does this branch do? Read this book to find out.

What are checks and balances? They are limits that keep different parts of government from having too much power. But just what are these limits? And how do they help our government run more smoothly? Read this book to find out.