The reclassification of Pluto in 2006 not only decreased the number of planets in our solar system by one but also introduced the new category of dwarf planet. Readers will come to understand what sep
The sense of sight shapes our comprehension of the world around us. Each layer of the eye plays an integral part in helping to convert light into electrical impulses that the brain can process. Beyond
Without the stomach and intestines, we wouldn’t be able to digest food or fuel our bodies to create energy. This book teaches young readers about all the parts of the digestive system, including the s
Take a deep breath and dive right into the ins and outs of what keeps us breathing: our lungs. This bright and informative book offers a lively yet straightforward overview of the parts of the body in
An introduction to taxes discusses the history of taxation, explains why we pay taxes, and examines the different types of taxes and how they are used.
This insightful guide explores the pre-Columbian native civilizations that thrived in North America, revealing a diverse range of cultures, languages, and customs. Particularly interesting is the exam
This fascinating narrative introduces young readers to the ancient civilizations of Mesoamerica. Evolving from their primitive ways to complex societies, these ancient peoples left records for archaeo
Feared, revered, honored, and hated at various points throughout history, the gray wolf has always seemed to provoke strong responses. By the twentieth century, human beings had killed or driven off w
Many animals live in water, but only some can be defined as fish. Twenty-eight thousand species of fish exist, each with different characteristics. Readers from grades one through four will learn that
Rome was the city that conquered the entire Mediterranean world. For almost 5 years, it presided over that world, shaping it, and providing instruction for all those who came later. The city fell to t
Without electrical engineers, the world we live in would look very different. Telephones (both landlines and cell phones), televisions, refrigerators, air conditioners, computers, video games, and man
