Criptología digital (Digital Cryptology)

«Las novelas de Colin Harrison no se leen: se devoran.»The Philadelphia Inquirer «Harrison domina como nadie el clima y la ambientación.» MICHIKO KAKUTANI, The New York Times. «[Harrison es] el mayor especialista de la novela urbana.» Entertainment Weekly Cuando una noche Jin Li, una atractiva mujer china que vive en Nueva York, acepta ir a dar una vuelta en coche hasta Brooklyn con dos chicas mexicanas sin papeles, poco podía pensar que minutos después tendría que echar a correr para salvar su vida. ¿Por qué? Porque Jin Li no es exactamente lo que parece. Entre las personas que...

Navigation instruments have changed over time. Lodestones, sunstones, and sextants helped early navigators find their way. Modern technology makes navigation more precise than it has ever been. But the roots of navigation still remain. Created in collaboration with the Smithsonian Institution, this Smithsonian Informational Text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step of the engineering design process and is perfect for makerspace activities. It ...

Teach students about trading and buying goods and services. In this Spanish-translated book, readers will learn about supply and demand, and learn the difference between wants and needs. Featuring images that support the informational text, students will build social studies content-area literacy and reading skills.

Simple text and pictures introduce facts about snowplows and tells what they are used for and why they are important.