Criptología digital (Digital Cryptology)

Febrero de 1808. Las tropas francesas llevan acantonadas en España. Se respiran aires inciertos y nadie sabe cuáles son las verdaderas intenciones de Napoleón. Cuando Franz Giesler, partícipa de una conspiración que mantiene en jaque al Imperio francés, aparece cruelmente asesinado, su hijo emprende un largo y peligroso viaje a través del país en guerra. El rastro de su padre le sumergirá en una trama de proporciones insospechadas, un complejo mecanismo de relojería cuyo eje, un terrible secreto, podría hacer tambalear el futuro de Europa. A lo largo de su búsqueda, desde la...

What is the common good and how does it benefit society? This book looks at the history behind the notion of the common good, touching on ideas from several famous philosophers. Readers will then learn how the common good can be promoted through education and community. Full-color photographs and accessible language help students connect with the text and develop reading comprehension skills. Important elementary subjects from the C3 Framework for Social Studies are discussed in detail throughout this informative book.

This timeless tale (now available in Spanish) tells children the story of the crucifixion from the viewpoint of Rex, the tree that became the cross Jesus carried to Calvary. Proud and ungrateful at first, Rex learns a lesson in love from the humble and gentle Jesus. With this story, children come to understand the importance of Jesus' sacrifice and the power of his love. El arbol orgulloso se llamaba Rex y se portaba como si fuera el rey de todos los arboles del bosque. Hasta que un dia sucedio algo que cambio su vida y la de toda la creacion. Este relato imaginario sobre la crucifixion llega ...

Take a trip to the British Museum as you explore its fascinating objects and geometric shapes! This famous London museum was built for exploration - and for learning geometry. Learn about its history and artifacts as you build your geometry skills. This Spanish math book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems,...