Susan H Gray

Provides a description of the megalosaurus, a dinosaur species that lived from about 185 million to 160 million years ago, discusses the history of megalosaurus discovery and study, and explains how scientists can tell the difference between the fossils of various dinosaurs.

Describes experiments that can be performed with plants in order to learn about their properties, including whether roots grow before stems, the importance of light, and how plants drink water.

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...

Describes what is known about the physical characteristics, behavior, habitat, and life cycle of this herbivorous dinosaur.

Young children are naturally curious about animals. Tell Me Why Zebras Have Stripes offers answers to their most compelling questions about the unusual pattern of this African animal. Age-appropriate explanations and appealing photos encourage readers to continue their quest for knowledge. Additional text features and search tools, including a glossary and an index, help students locate information and learn new words.

Young children are naturally curious about animals. Tell Me Why Penguins Can't Fly offers answers to their most compelling questions about that flightless bird. Age-appropriate explanations and appealing photos encourage readers to continue their quest for knowledge. Additional text features and search tools, including a glossary and an index, help students locate information and learn new words.

Young children are naturally curious about animals. Tell Me Why Bears Hibernate offers answers to their most compelling questions about why bears sleep all winter. Age-appropriate explanations and appealing photos encourage readers to continue their quest for knowledge. Additional text features and search tools, including a glossary and an index, help students locate information and learn new words.

Young children are naturally curious about animals. Bats Sleep Upside Down offers answers to their most compelling questions about why bats hang upside-down at night. Age-appropriate explanations and appealing photos encourage readers to continue their quest for knowledge. Additional text features and search tools, including a glossary and an index, help students locate information and learn new words.

Provides step-by-step instructions for performing experiments with insects, investigating various prinicples about their behavior.

Follow the Emperor Penguin's journey across Antarctica in the Marvelous Migrations series. Focused on 21st century content, engaging inquiry-based sidebars encourage young readers to think, create, guess, and ask questions. Book includes table of contents, glossary, index, author biography, and sidebars.