The grizzly bear once roamed much of western North America. In the early 1800s, as many as 50,000 grizzly bears lived in the West. As settlers pushed westward, the bears lost much of their habitat. Fewer than 1,000 grizzlies remained in the lower 48 U.S. states when the bear was listed as endangered. Read this book to learn how grizzly bears came close to extinction and find out what is being done to increase their numbers and insure their survival.
The ability to use the scientific method is key to carrying out experiments, taking measurements, or performing technical tasks. In this book, readers in real-world situations are tasked with following clues and using the scientific method to find out what happens as animals approach extinction. Informational text presents evidence and facts in the form of clues and side-bar details to help children develop critical thinking skills. A summary of the situation is included to show how each chapter contributes to the whole and for a solid understanding of the topic.
Lean about the similarities between radar technology and a bat's built-in echolocation system.
Learn about the similarities between cat eyes and reflectors.
The Hands on Science series provide students with background on key concepts in Science. Each title includes engaging hands on exercises that help bring the concepts to life for kids. Real World Science: Animals, provide information on the basic needs of animals, and the body parts and behaviors that help animals meet their needs.
The bald eagle is known to people around the world as a symbol of the United States. In the early 1800s, as many as 100,000 bald eagles lived in the United States. By the 1960s, the familiar bird of prey was nearly extinct. What happened? Read this book to find out how human activity brought the handsome eagle close to extinction. Discover how human efforts helped it fight back and once again become a familiar sight in North American skies.
The California condor is the largest bird in North America. Scientists have found condor fossils that are nearly 100,000 years old. As more people settled in the American west, however, condors lost much of their habitat to human development. By 1982, fewer than 25 California condors lived in the wild. Read this book to find out more about California condors, how they came close to extinction, and what people are doing do help make sure condors stay on the road to recovery.