El sistema óseo (The Skeletal System)

Una historia sobre guerreros del pasado a los pies de una montaña. La segunda muestra a unos alpinistas del presente tratando de coronarla y, en la cima, alguien misterioso... La pieza que une ambas historias, las páginas centrales de esta obra, las escribirá el lector; solo él tiene la clave. Una estupenda manera de incentivar la creatividad y la imaginación.

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...

Learn how to react when you see something wrong or dangerous with this relevant Spanish nonfiction book. Perfect for young readers, the book includes a fiction story related to the topic, a connected civics project, a glossary, useful text features, and engaging sidebars. This 28-page full-color Spanish book explains in an easy-to-understand way that students should talk to a trusted adult about things that make them uncomfortable or scared. It also covers serious subjects such as bullying and “stranger danger”, and includes an extension activity for grade 2. Perfect for the classroom,...

Nuestra vida llega a celebrar las primeras 100 copias distribuidas de ¡Canta, Cancionero! Con mejoras y avances de lo que será el futuro, Nuestra vida, llega a tocar una vez más, los sentimientos del lector.