Experimentos sencillos sobre el tiempo

The Bill of Rights is one of the most important parts of the United States Constitution. Understanding this document is a vital part of understanding the rights we have as American citizens. This informative volume delves into each amendment of the Bill of Rights and looks at the important people and political decisions behind them. Graphic organizers, charts, and primary source documents supplement this already richly informational resource.

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...

Explore our solar system and Earth's place in it as readers flip through the pages of this Spanish-translated nonfiction title. Featuring vibrant images in conjunction with accessible charts and diagrams, readers will be fascinated from cover to cover!

Continuando con la experiencia del equipo Aldebarán para la elaboración de proyectos de Religión, se presenta el “método Aldebarán XXI” para la nueva Secundaria. Textos, artículos de vigencia, historia... todo lo relacionado con la búsqueda de Dios, perfectamente adaptado para los estudiantes. Se pretende básicamente el acercamiento de los alumnos a los textos fundamentales de la fe católica, y mostrarles los criterios clave de interpretación de las fuentes del cristianismo. A través de las distintas Unidades, el alumno valorará la vigencia e importancia del mensaje cristiano, ...