Rector, Rebecca Kraft

"In this accessible text, readers are introduced to the basics of chemical changes. Easy-to-follow explanations cover matter, forms, properties, and changes. Further detail introduces how to make chemical changes and how to recognize them"--Publisher.

"A burning log, a rotting banana, a rusting bicycle...all are examples of chemical changes. In this accessible text, readers are introduced to the basics of chemical changes. Easy-to-follow explanations cover matter, forms, properties, and changes. Further detail introduces how to make chemical changes and how to recognize them. Color photos, fast facts, and an engaging activity expand and reinforce the new ideas. The book supports Common Core and Next Generation Science Standards, correlating directly with the NGSS Grade 2 standard to 'classify different kinds of materials by their observable properties'"--Provided by the publisher.

"The sun, planets, moon, and other space objects are all part of our solar system . . . readers learn what a solar system is and what it contains, such as asteroids, comets, the Kuiper Belt, and the Oort Cloud"--Provided by publisher.

Provides information about the Grand Canyon, discussing the geography, history, wildlife, peoples, and environmental issues.

Provides information about the Amazon Rainforest, discussing the geography, history, wildlife, peoples, and environmental issues.

"In this . . . biography, you will discover how Shawn [Mendes] went from being a typical teenager who was into sports and music, to being . . . [a] young star. Learn about his family, his interests, his goals, and how he tries to make a difference in the world"--Provided by publisher.

Explore the past, present, and future of the Amazon rainforest.

Provides information about the Great Barrier Reef, discussing the geography, history, wildlife, peoples, and environmental issues.

Looks at "how social hierarchies, religion, culture, written language, technology, and more developed first in Mesopotamia and then independently in the Nile, Indus, and Yellow River valleys. A timeline helps readers get a better grasp of what developments were happening simultaneously in different parts of the world."--Amazon.

Not only was Turing one of the founders of computer science, he also helped the British military break Nazi codes, allowing them to decipher messages that helped the Allies win World War II. Turing was a pioneer in the field of artificial intelligence; he developed the Turing test, which determines whether a machine is capable of intelligence like that of a human being. Despite his impressive list of accomplishments, Turing was persecuted for his homosexuality. Sidebars offer extra information about topics such as Bletchley Park, ciphers, and the times Turing lived in, while a timeline serves as a quick reference for the chronology of key events in Turing s life. Bibliography, Detailed Table of Contents, For Further Information Section, Glossary, Index, Sidebars, Web Sites, Full-color photographs, Timelines, Biographies.