A la vanguardia: Adelantos en tecnología (The Cutting Edge: Breakthroughs in Technology) 6-Pack

With gentle encouragement, this book teaches children that they can think before speaking, choose what to say and how to say it, and find positive ways to respond when others use unkind words. The importance of saying “I’m sorry” is reinforced. Includes tips for parents and caregivers.

Estructurado en doce unidades; Enfoque comunicativo; Estudio inductivo de la gramática; Resumen nocio-funcional.

The American Revolution was one piece of a global struggle for power. Great Britain, France, Spain, and the colonists under each empire's rule fought for control of the world's vast lands and resources. On the American battlefront, Bernardo de Galvez, a Spanish general, would survive battle wounds and hurricanes to lead a diverse force to victory. His leadership changed the course of history, and contributed to the American patriot's success. In this enlightening and engrossing book, students will think critically about the global nature of the era as they study a new perspective and powerful ...

La energía es elemento fundamental del mundo contemporáneo, y ha sido la base del desarrollo y dominación del entorno que, nuestra especie, ha venido realizando sobre el entorno y el mundo que nos rodea. Cada nuevo salto en la cultura o en la civilización ha traído aparejado un aumento en la energía (tanto en la producción como en el gasto); por lo tanto, es un componente vital de la sociedad contemporánea. Este libro explora los distintos tipos de energías que existen y se mueve en un amplio abanico porque, entre la energía de los propios músculos y la moderna energía eólica, la ...