Gives readers a behind-the-scenes look at the building of the Hoover Dam. Additional features include a table of contents, a Fast Facts spread, critical-thinking questions, primary source quotes and accompanying source notes, a phonetic glossary, an index, and sources for further research.
Gives readers a behind-the-scenes look at the building of the Golden Gate Bridge. Additional features include a table of contents, a Fast Facts spread, critical-thinking questions, primary source quotes and accompanying source notes, a phonetic glossary, an index, and sources for further research.
Have you ever tried putting together a puzzle without knowing what it would look like when you had finished? If you have, you know what Othniel Charles Marsh felt like as he put together the bones and plates of a Stegosaurus he had discovered. Follow Stegosaurus from its life on Earth millions of years ago to its reconstruction in a museum--bones, plates, and all! 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.
Spinosaurus was a truly unique dinosaur. But it has certainly left behind plenty of questions for scientists to answer! Students will enjoy developing their own conclusions about the life and times of this spiny lizard. 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.
Scientists who study dinosaurs often have to be good detectives. And like detectives, they sometimes come to the wrong conclusions. That's what happened when George Olson discovered the first Oviraptor fossil. Learn why Olson named the new dinosaur 'egg stealer' and how later scientists finally uncovered the truth about Oviraptor. 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.
The story of the Maiasaura is a story of good mothers, both dinosaur and human! One good mom's discovery of Maiasaura bones changed the ideas of many scientists about how some dinosaurs cared for their young. Find out for yourself what made Maiasaura such a good dino parent. Would you like one as your mother? 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.
Life was often difficult for the Iguanodon. It couldn't fight larger dinosaurs with sharp teeth or pointy spikes. Even thunderstorms could pose a danger. Learn how Iguanodon survived on Earth for nearly twenty million years and why its fossils have been discovered all over the planet. 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.
We think of dinosaurs as big and ferocious. Yet the name Compsognathus means 'pretty jaw!' Learn about this strange little dinosaur, from its life in the Jurassic period millions of years ago to the first discovery of its delicate fossil in Germany. 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.
Imagine walking down the street and running into an Ankylosaurus. Its heavy, plated body and thick spines would surprise anybody! But despite its size and armor, this 'stiff lizard' could move pretty quickly when it needed to. Discover how Ankylosaurus continues to surprise scientists--and unsuspecting readers--to this day. 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.
Find out how the enormous, plant-eating Apatosaurus gained the name 'deceptive lizard.' Learn what role it played in 'The Great Bone Wars' of the 1870s. Follow the many changing theories surrounding Apatosaurus, and come up with your own ideas about what life was like for this strange and mysterious 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.
Long ago, a once-mighty Allosaurus stalked the land searching for helpless prey for dinner, too sick to battle stronger dinosaurs. Millions of years later, scientists discovered the bones of this 'different lizard' in Wyoming and named him Big Al. Read how Big Al helped them learn more about Allosaurus and its days on Earth. 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.
Engages readers with incredible stories of people who made daring escapes from sinking ships. Thousands of people on board fought for their lives as these ships sank to the depths of the ocean, and only some survived. Additional features include a Fast Facts spread, informative infographics, critical-thinking questions, a phonetic glossary, a selected bibliography, an index, information about the author, and sources for further research.
Offers readers a captivating look into Apollo 11's historic space achievement and how the country rallied behind the bold idea to visit the moon. Learn about the struggles astronauts faced and the pivotal moment when the first man stepped onto the moon's surface. Additional features include a Fast Facts spread, a timeline, critical-thinking questions, primary source quotes and accompanying source notes, a phonetic glossary, resources for further study, information about the author, and an index.
The plastic industry has profoundly impacted our world. The Planet Human series breaks down the human impact on the environment over time and around the globe. Each title presents important high-interest natural science nonfiction content with global relevance.
The digital communications industry has profoundly impacted our world. The Planet Human series breaks down the human impact on the environment over time and around the globe. Each title presents important high-interest natural science nonfiction content with global relevance.
The energy industry has profoundly impacted our world. The Planet Human series breaks down the human impact on the environment over time and around the globe. Each title presents important high-interest natural science nonfiction content with global relevance.
The agriculture industry has profoundly impacted our world. The Planet Human series breaks down the human impact on the environment over time and around the globe. Each title presents important high-interest natural science nonfiction content with global relevance.
What are the similarities and differences between modern and historical food distribution methods? Learn about how food has made its way to consumers in the past, as well as present-day and future practices of food distribution. This book takes students on a historical journey through the evolution of food distribution.
Welcome to the exciting world of paleontology! This book is about the discovery of Tyrannosaurus rex, including information about the dinosaur's appearance, movement, and diet before it became extinct.
Welcome to the exciting world of paleontology! This book is about the discovery of the Triceratops dinosaur, including information about the dinosaur's appearance, movement, and diet before it became extinct. A massive pair of animal horns is found near the Rocky Mountains. Is it a bison—or a Triceratops?
Welcome to the ever-changing world of paleontology! This book is about the discovery of the Stenonychosaurus dinosaur, including information about the dinosaur's appearance, movement, and diet before it became extinct. A strange lizard tooth found in 1855 turned out to be one of the first dinosaurs found in the United States. In 2017, its name was changed from Troodon formosus to Stenonychosaurus.
Let's explore the exciting world of paleontology! This book is about the discovery of the Ankylosaurus dinosaur, including information about the dinosaur's appearance, movement, and diet before it became extinct. This special dinosaur was covered with armor and roamed the plains of North America. Did it live near you? Let's find out!
Let's explore the exciting world of paleontology! This book is about the discovery of Hadrosaurus, including information about the dinosaur's appearance, movement, and diet before it became extinct. Did you know that a dinnertime story led to the discovery of a dinosaur? And that strange old bones dug up behind a house became the first North American dinosaur ever seen by the public?
Let's explore the exciting world of paleontology! This book is about the discovery of the Allosaurus dinosaur, including information about the dinosaur's appearance, movement, and diet before it became extinct.
In Unexplained: Unsolved Crimes, readers in grades 4–8 will step into the world of unsolved crimes, where the trail runs cold and many cases remain open. From heists and murders to burglaries and beyond, these unsolved crimes have stumped even the most skilled investigators.
