Siglo XXII: El futuro del espacio (22nd Century: Future of Space)

Inform readers of the dangers of smoking. Through helpful diagrams, detailed images, and truthful facts, readers are given the tools and information to educate themselves about smoking, tobacco, addiction, and the health problems that smoking can cause. With informational text, an index, glossary of terms, and list of websites, this text encourages children to say no to smoking and peer pressure and to learn what steps they can take to help prevent others from starting. This book has been translated into Spanish.

What does swimming in a pool, drinking through a straw, breathing in air, and circulating blood all have in common? They all require a form of air or water pressure! Readers will discover the variety of ways that air and water pressure make an impact on our lives and the things in them. This fact-filled, Spanish-translated nonfiction title includes real-life examples and basic experiments to aid in the development of understanding physic and scientific concepts. Readers will be introduced to and learn about Archimedes Principle, atmospheric pressure, vacuums, water density, and hydraulics...

In this stimulating, Spanish-translated nonfiction book, readers will discover the various types of friction--including rolling friction, sliding friction, fluid friction, and static friction--and the huge impact it has on nature, machines, and our lives. In addition, readers are encouraged to perform basic experiments to assist in the understanding of friction, kinetic energy, and water resistance. With real-life examples, colorful images, accommodating graphs and charts, and informational text, this title will inspire and engage children.

A koala rests comfortably in an Australian eucalyptus forest, penguin families gather on icebergs of Antarctica, an alligator protects her young in its mouth, a hippopotamus teaches her baby the art of bathing, and an elf owl peeks out of its cactus nest. These captivating images, taken by some of the world's leading wildlife photographers, introduce young children to similarities that exist between the animal world and their own. Photographs of animal habitats from all over the world teach young readers that all living creatures live in special places they call home. And by seeing animals...

El Proyecto Aristóteles es un centro de creación de materiales didácticos en áreas fundamentales de la educación. Este libro es el Tomo I de la Colección de Problemas de Matemáticas para 4º de Primaria, organizada en progresión de dificultad. En él encontrarás 150 problemas de multiplicaciones, divisiones, fracciones, magnitudes, etc., con los que poner a prueba los conocimientos matemáticos de los niños de esta edad.

Introduces the geography, history, religion, government, economy, and culture of one of the poorest countries in the western hemisphere.

What's the best way to keep the body and mind healthy? This book explores helpful ways to keep bodies in good shape and brain strong as well as the importance of being happy. The language arts connection is important vocabulary about staying healthy.