Criptología digital (Digital Cryptology)

"Dino" Don Lessom brings readers face-to-face with various dinosaurs, detailing how they lived, raised their young, and became extinct. Maps, timelines, and colorful illustrations and photographs will capture kids' attention. A dinosaur expert, Don Lessem has written more than 30 children's books.

Storms are a fascinating topic and a great way to get young readers interested in science. This series uses simple text and dramatic, full-color photos to take students inside nature's powerful and deadly storms. Each book explains one kind of storm- what it looks like, how it forms, the damage it can do, and how people can protect themselves from danger.

Soil, plants, rain, and sunlight. These are all things that make a garden grow. Introduce life science and STEAM topics to your youngest learners with this STEAM book for English language learners. Created in collaboration with Smithsonian, this Spanish book makes it easy for parents and teachers to teach STEAM to beginning readers and uses real-world examples to make STEAM topics easier to understand. It features an age-appropriate STEAM activity that is perfect for makerspaces and introduces kindergartners to the steps of the engineering design process. Ignite a curiosity for STEAM in grade ...

Durante la Segunda Guerra Mundial, el salón de té Embassy, uno de los centros sociales más elegantes del Madrid de la época, se convirtió en el lugar de encuentro de numerosos agentes y cooperantes secretos de los servicios de inteligencia británicos. Entre ellos, el doctor Eduardo Martínez Alonso, el padre de la autora. En esta histórica, su hija busca demuestrar cómo este médico ayudó directamente en la red humanitaria organizada por el Servicio Secreto británico, que, a través de España, evacuaba a refugiados europeos hacia Portugal y Gibraltar. Miles de perseguidos por el...