Describes the history of the Hoover Dam, why and how it was built, and how it works. Additional features include a table of contents, sidebars, infographics, Fast Facts, critical thinking questions, a phonetic glossary, an index, information about the author, and sources for further research.
Describes the national bird of the United States and how it came to be symbolic of the country. Additional features include a table of contents, sidebars, infographics, Fast Facts, critical thinking questions, a phonetic glossary, an index, information about the author, and sources for further research.
Tiny, fiesty, and sometimes persnickety, the Yorkshire terrier is one of the most popular dog breeds. Learn more about these miniature dogs, from their origins to their quirky personality traits.
Find out why leaves turn orange, yellow, red, and purple in the autumn before falling to the ground. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out what causes spring, summer, fall, and winter and how different parts of Earth experience the seasons. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how caterpillars form a chrysalis or cocoon before transforming into a butterfly or a moth. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
A child plays hide-and-seek with some animals in the woods, but he loses the game when he cannot figure out where Baby Bear lives.
Find out how the atmosphere makes the sky look blue during the day and orange and red at sunrise and sunset. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how clouds and fog are formed and how they are alike and different. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how the water cycle causes rain, snow, sleet, and other types of precipitation. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how the movement of Earth causes the first day of summer and the first day of winter. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Find out how raindrops in the air bend sunlight to turn it into a colorful rainbow. Additional features to aid comprehension include colorful images, informational diagrams, hands-on activities, detailed captions and callouts, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
A simple look at the physical characteristics, behavior, and life cycle of whales. Additional features to aid comprehension include fact-filled callouts, detailed photographs, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
A simple look at the physical characteristics, behavior, and life cycle of walruses. Additional features to aid comprehension include fact-filled callouts, detailed photographs, a table of contents, a phonetic glossary, sources for further research, and an introduction to the author.
Provides information about volcanoes, how they form, where they are, how they erupt, the damage they can cause, and the ways we can monitor them.
What can scientists learn from an ancient fossil of two dinosaurs locked in battle? Plenty! One of those dinosaurs was a Velociraptor, a 'quick thief' and predator of the Cretaceous period. Like the scientists who study Velociraptor, young readers will discover how much eighty-million-year-old bones still have to say! Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for further research, a Did-You-Know section, and an overview of the geologic time scale.
Pets are an important part of the family. So when they get sick or hurt, we rely on the skill and compassion of veterinarians. This book features colorful pictures and easy-to-read text that allow young readers a glimpse at the demanding--but rewarding--world of animal doctors.
When you think of dinosaurs, do you think of ferocious meat-eaters terrorizing everything around them? If so, you were probably imagining the Tyrannosaurus Rex, the 'tyrant lizard' of its time. But if you think you know everything there is to know about T. Rex, think again! Learn about the many sides of this mighty dinosaur. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for further research, a Did-You-Know section, and an overview of the geologic time scale.
An introduction for young readers on the basics of how to care for a pet turtle. Bright photos and clear, simple text lay the foundation for children to take greater responsibility and a more active role in their pets' lives. Additional features include a table of contents, a glossary of key words and phrases, a fun-facts section, a list of needs and dangers to the pet, and sources for further research.
In 1888, scientists searching for dinosaur bones found an enormous head like none they had ever seen before. They named it Triceratops, meaning 'three-horned face.' As they discovered more bones, they learned more and more about this 'new' dinosaur. With this book, you too can go back in time millions of years to explore the world of Triceratops. Additional features to enhance comprehension include informative sidebars, a glossary of key words and phrases, sources for further research, a Did-You-Know section, and an overview of the geologic time scale.
Trains are used to carry everything from cargo and animals to people. But how do trains move? Who drives them? Learn more about these important machines inside.
Whether they're being used to plow fields or push dirt and snow, tractors are important machines. Get the basics on these useful machines inside.
How are tow trucks used? What are the special parts of a tow truck? How do tow trucks work? Learn more about these important trucks inside.
Examines tornadoes, their causes, where they occur, their characteristics, and the effects they produce.
Describes the physical characteristics, behavior, habitat, and life cycle of various toucan species.