Describes the different types of computer viruses, including trojans and worms; explains why they are harmful to computers; and details preventative steps to take to protect a computer against viruses
Explains what computer networks do and how they work, discussing such topics as LANs, clients and hosts, servers, hubs and routers, protocols, and peer-to-peer networks.
Describes some of the activities that occur in the school library, including asking a librarian for help, using the computer, reading, being quiet, and taking out a book.
Describes the technology of the ancient Americans, covering their advances in such areas as building, agriculture, irrigation, writing, medicine, astronomy, metals, pottery, and weaponry.
Describes the technology of ancient China, covering their advances in such areas as building, agriculture, irrigation, writing, medicine, astronomy, metals, pottery, and weaponry.
Describes the technology of ancient Rome, covering their advances in such areas as building, agriculture, aqueducts, glassmaking, textiles, astronomy, metals, pottery, and weaponry.
Describes the technology of ancient Mesopotamia, covering their advances in such areas as building, agriculture, irrigation, writing, medicine, astronomy, metals, weaving, and weaponry.
Describes the technology of ancient Greece, covering their advances in such areas as building, agriculture, theater, science, medicine, astronomy, metals, pottery, and weaponry.
Describes how wireless communication technology works; discusses WLANs, hotspots, and network security; and explains how WiFi is used today in doing business, watching television, and online gaming.
Introduces minerals at a molecular level, and includes information on their properties, where they can be found, and how humans use minerals in nutrition and technology.
Examines the development of science through the ages, from the trial-and-error of prehistoric humans through Greek scientists to the current age of supercomputers and cloning technology.
Introduces eSports, or playing and watching competititive video gaming, and provides advice on getting started in the field and information on professional players and related activities.
Introduces the world of Roman mythology and relates the adventures of Aeneas and the stories of Romulus and Remus, Cupid and Psyche, Pluto and Prosperina, and Apollo and Daphne.
Describes the various parts of the respiratory system and how they work, and discusses asthma, lung cancer and other lung diseases, and related topics.
Describes the various parts of the skeleton and how bones grow, and discusses joints, the difference between male and female skeletons, bone injuries and diseases, and related topics.
Describes the various parts of the nervous system and how the brain works, and discusses the effects of injuries and diseases, the nervous system in other animals, and related topics.
Presents pairs of photographs of similar items, including a toy fire truck and a real one, and a kitten and a tiger, to introduce the difference between light and heavy.
Surveys the physical features, geological borders, climate and currents, water, plant and animal life, and economic and ecological aspects of the Atlantic Ocean.
Surveys the physical features, geological borders, climate and currents, water, plant and animal life, and economic and ecological aspects of the Indian Ocean.
"Citizen science--when scientists need observations from ordinary people to build a database and complete research--is hot right now in many science fields. Climate change, migration patterns, plant g
"Understanding light and color might seem impossible--but if readers already know the colors of the rainbow, they're part of the way there! Including the light spectrum, wavelengths, and other key con
"Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism--and so can this book! Specia
"The night sky is a place of wonder for all young readers. Stars are of particular fascination, especially once they learn that the sun is a star! In this book, learners explore the gases and life cyc
"This book fills young readers heads with fascinating tidbits, all the while teaching them about the people, places, and events that not only changed the size of our country but also shaped its charac
