Como Hacer Un Cohete Efervescente/How To Build A Fizzy Rocket

What substance can act like both a solid and a liquid? Slime! Want to find out how to make your own? Just follow the simple steps inside this book

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...

Animals talk with sounds, but they talk with their bodies, too! This engaging Spanish book teaches beginning readers about different ways that animals communicate. Engage students in reading as they develop their early childhood literacy skills. With TIME For Kids content, this full-color book is aligned to state and national standards, and introduces students to simple informational text features.

Readers are introduced to some of the most well-known criminals and tyrants of the past in this exciting nonfiction reader. Featuring intriguing facts and theories, colorful images, and informational text in conjunction with a glossary of terms, a bibliography, and a list of helpful websites with more information, this text will make readers want to learn all they can about ancient history and the bad guys and gals from the past. This book has been translated into Spanish.

Este libro entusiasmará a muchos jóvenes con el trabajo científico. Consta de 140 experimentos en tres niveles según su dificultad, y en cada uno el autor explica con claridad lo que pasa. Estimulará el asombro ante fenómenos que vemos cada día y llevará al lector a preguntarse por qué son así.