Therese Shea

Even as the national bird of the United States, the bald eagle has not always been universally beloved. Hunting, poisoning by DDT, and other human activity reduced bald eagle numbers from many thousands to fewer than 1,000 by the 1960s. Young readers are introduced to this incredible bird and the story of its recovery after it reached the brink of extinction. They will learn what actions were undertaken to protect the species and how its disappearance...

Planes, trains, and automobiles-these are just some of the many achievements of mechanical engineering. This volume will show readers that they do not have to know complex equations to appreciate the impact the field has had on the world. Accessible text introduces young readers to the machines and engines that power the devices, vehicles, and appliances they encounter on a daily basis. Boxes explain important terms and concepts of mechanics and encourage...

"The crustacean subphylum can be broken down into decapods, amphipods, copepods, and other types. This title offers readers from grades one through four comparisons between the needs and roles of different crustaceans, which will allow readers to understand the subphylums importance. Readers will recognize and expand their knowledge about familiar species like the lobster and the shrimp, while being introduced to the likes of the wood louse and zooplankton....

Water that lurks beneath the Earth's surface is usually far easier to ignore than the water that covers it-until that water bursts forth above ground as geysers and hot springs. This engaging volume explains to young readers where this water comes from and its relationship to volcanic activity underground. They will also learn where on Earth these spectacular eruptions are found, how geothermal energy can be harnessed for our use, and much more. Striking...

A V-shaped flock of geese flying overhead on a fall or winter's day is a familiar sight to most of us. But, as this vibrant volume shows, there are numerous other animals that also migrate for various lengths of time and for various reasons. Colorful photographs allow readers to follow birds, zebras, whales, turtles, and more as they migrate to find food, shelter, breeding grounds, or more suitable climates. Readers will learn how air, land, and water...

In this concise volume, readers learn how atlases came to exist and how they have evolved over the years. Exercises and fact boxes throughout the book engage readers in hands-on activities to familiarize them with using an atlas and its features. This volume supports Common Core Sta ndards (such as using glossaries and indexes, interpreting charts, and drawing on information from multiple sources) with content that encourages and inspires thinking,...

The towering buildings that fill our cities definitely werent built in a day. Skyscrapers are huge construction projects full of complicated steps. From drilling anchor holes and erecting steel beams to laying acres and acres of concrete, it takes lots of people and lots of smarts to build a vertical city. Readers will love putting on their hard hats and seeing the construction for themselves through vivid photographs and diagrams of a building on...

"The towering buildings that fill our cities definitely weren't built in a day. Skyscrapers are huge construction projects full of complicated steps. From drilling anchor holes and erecting steel beams to laying acres and acres of concrete, it takes lots of people and lots of smarts to build a vertical city. Readers will love putting on their hard hats and seeing the construction for themselves through vivid photographs and diagrams of a building...