Criptología digital (Digital Cryptology)

Young readers will discover amazing facts about birds' nest-building habits and other information with this new guide featuring Internet links to each of the book's topics.

Desde los albores de los tiempos, miramos hacia arriba y nos preguntamos... ¿qué hay allí? La sonda Voyager 2 ha explorado durante más de cuarenta años los confines de nuestro sistema solar y en estos mismos momentos se aventura en el espacio exterior llevando un mensaje de la humanidad. Este álbum nos transporta poéticamente a la profundidad del espacio exterior en un viaje embriagador más allá del infinito. Since the dawn of time, we look up and wonder ... what is there? The Voyager 2 probe has explored the confines of our solar system for more than forty years, and at this very...

Each player has his or her own job in soccer and baseball. They each do their part to contribute to the team. Teamwork is also important outside of sports. We use teamwork in our classroom, in our community, and at home with our family. Readers are presented with different scenarios in which young people use teamwork to achieve a certain goal, like when Nicole's neighbor becomes ill, everyone in the neighborhood takes on a job with the goal of helping the sick neighbor. Each spread contains a color photograph that imparts the importance and rewards of working as a team.

This Spanish language edition of Yuyi Morales's Pura Belpré Award winner and New York Times Bestseller Dreamers is now available in paperback! Caldecott Honor artist and six-time Pura Belpré winner Yuyi Morales's gorgeous book Dreamers, and its Spanish language version Soñadores, are about making a home in a new place. Yuyi and her son Kelly's passage was not easy, and Yuyi did not speak any English at the time. But together, they found an unexpected, unbelievable place: the public library. There, book by book, they untangled the language of this strange new land, and learned to make their ...