Cómo podemos utilizar el tornillo?

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Solar Energy Is Explained. Included In This Book Is Where It Comes From, Who Uses It, And The Positive And Negative Benefits Of Using It. Correlated To Common Core, Texas TEKS, Virginia Sols, And Georgia Performance Standards.

This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.

Este libro ilustrado para niños y jóvenes ofrece un análisis equilibrado de las creencias, la historia y las costumbres de todas las grandes religiones del mundo y de muchas doctrinas menos conocidas.

Light can travel faster than anything else in the universe. But what exactly is light, and where does it come from? This nonfiction Spanish book teaches students all about light, and introduces them to important scientific concepts and vocabulary terms like infrared, ultraviolet, photos, and visible spectrum. The intriguing images, detailed diagrams, and stimulating sidebars will keep students connected to the text. The fun lab activity provides a real-world learning experience that supports STEM instruction. Aligned to state and national standards, the leveled text supports differentiation....

Crónica que repasa la historia de las relaciones limítrofes de Chile con Argentina. De manera documentada, sin apasionamientos, narra la evolución de las fronteras desde la época anterior a la independencia y hasta la fecha, dejando finalmente la interrogante si este nuevo diferendo nos llevará a una corte internacional o a un arbitraje. Se abordan los siguientes puntos en conflicto: -Los límites coloniales de Chile desde 1554 -Las pérdidas territoriales de la Capitanía General de Chile entre 1563 y 1776 -Los acuerdos territoriales entre Chile y Argentina al independizarse -Chile...

The world's myths are filled with characters, creatures, and stories that have fascinated people for thousands of years. This series mixes dramatic retellings and non-fiction information to give a full picture of a culture's myths. This book explores the gods, goddesses, heroes, villains, tricksters, and quests that make Roman myths and legends so compelling. Fully translated Spanish text.