Trenes de Alta Velocidad (Bullet Trains)

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

Ever wonder how a balloon is made? Follow the journey of a balloon from its beginnings as gooey sap in a tree to its completion at a rubber factory. You'll be surprised to discover what a balloon started out as and how it becomes the bright, air-filled decoration that you enjoy today.

Este libro es un cancionero sencillo para colaborar en la formación musical de la infancia sin pretensiones de establecer ninguna metodología convencional, propiciando que los elementos musicales básicos queden profundamente arraigados a través de la creatividad.

En estos materiales se ofrecen ideas, técnicas, ejemplos y fundamentación teórica para el tratamiento en el aula de los contenidos procedimentales en tres campos: comprensión lectora, resolución de ejercicios y problemas y actividad investigadora. Los ejemplos que se incluyen de todos los niveles de la ESO y de las cuatro materias integrantes de las Ciencias de la Naturaleza, permiten al profesorado sacar ideas para realizar su propia programación.