Ondas sonoras y la comunicación (Sound Waves and Communication)

Ignacio Zaragoza Seguin was born in Goliad, Texas, in 1829, when Texas was part of Mexico. His family lived on a Mexican fort because his father was a soldier in the army. Ignacio wanted to be a just like his father! When he was seven, Texas became independent from Mexico, and the family had to move to Matamoros, Mexico. Later they moved to Monterrey. Ignacio tried to join the Mexican army in 1846 when the United States declared war, but he was too young. He was finally able to join the armed forces when he turned 24. An outstanding soldier, he was named the commander of the Mexican army and...

En los últimos años, el inglés como lengua extranjera en la mayoría de los ámbitos de la vida cotidiana ha cobrado especial relevancia. De esta manera, el proceso de globalización impone el uso de este idioma para la negociación y gestión de operaciones de comercio internacional. A lo largo de este manual, se presentan una serie de pautas gramaticales y de expresión de la lengua inglesa en relación con las distintas actividades que se pueden desempeñar en los entornos laborales internacionales. Así, se fomentan una serie de habilidades lingüísticas, como la comprensión y...

In life there are lots of things that come and go, transform, or get left behind. It happens to everything . . . except this. This book deals with life changes and the passage of time with a great deal of sensitivity. To reinforce the message, each scene includes a page with special paper that invites us to witness the transformation.

"Whoosh! Crunch! Dump Trucks are here to haul! Learn how and where they do their work in this Machines! song. Includes glossary, critical thinking questions, and sheet music"--