Mi Mundo (My World) Vehículos de emergencia

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...

We use machines every day, but most of us don't understand how they work. When they break down, most of us have no idea how to fix them. Mechanics are the masters of machines. Readers learn that mechanics work on vehicles, including cars, boats, and buses. They use special tools to take them apart and fix what's wrong, and they use their experience and technology to diagnose problems. They often work long hours, sometimes in bad weather, to get us where we need to go. Your readers will see that mechanics keep our world moving and growing.

Publicación de 304 páginas que incluye los contenidos prescritos por el Real Decreto de enseñanzas mínimas de 1631/2006 de 29 diciembre y los contenidos recogidos en el Decreto 112/2007 de 20 de julio por el que se establece la ordenación y las enseñanzas correspondientes a la ESO en la Comunidad Valenciana.

Intermediate Readers Examine How Animals Hibernate, Use Camouflage, And Migrate To Survive Winter Conditions.