El uso de instrumentos para entender nuestro mundo / Using Tools to Understand Our World

Provides an overview of the design, uses, weapons, and equipment of U.S. Navy submarines. Written in English and Spanish.

Guide for teenagers to be better informed of their choices in life and problems they might encounter.

Anyone can learn computer science, even at the elementary school level. This book delves into computer science careers using age-appropriate language and colorful illustrations. A meaningful storyline is paired with an accessible curricular topic to engage and excite readers. This book introduces readers to a relatable character and familiar situation, which demonstrates computer science careers in everyday life. Readers will follow a narrator that makes an app with some help from their friends. This fiction book is paired with the nonfiction book Web Developers at Work (ISBN: 9781508137757). ...

As a land that’s constantly in flux, Earth sometimes reveals clues about the plants, animals, and other organisms that lived long ago. Fossils teach us much about what life was like millions of years ago, answering the questions of how Earth changed and maybe even why it changed. This essential Earth science topic is thoroughly explained through manageable text, fact boxes, informational charts and diagrams, and a glossary and index. Readers will become young Earth detectives by the time they’re through with this text!