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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.

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.

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

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.

An eye-opening look at the workings of the solar system En este ejemplar los ninos encontrarán la historia del universo, descrita con ilustraciones amenas y entretenidas El día y la noche (cuando sale el sol y la luna Un ano de viaje (el movimiento de la tierra en el espacio). Las cuatro diferentes estaciones de la tierra. La función del sol en la tierra (su influencia en las flores y en los animales). La tierra nuestro planeta (descripción de la tierra, sobre sus habitantes y su forma). La luna (su tamano, su aspecto, los viajes que se han realizado y que hay en ella). Los eclipses (como ...

We use machines every day, but most of us don't understand how they work. When they break down, most of us have no idea how to fix them. Mechanics are the masters of machines. Readers learn that mechanics work on vehicles, including cars, boats, and buses. They use special tools to take them apart and fix what's wrong, and they use their experience and technology to diagnose problems. They often work long hours, sometimes in bad weather, to get us where we need to go. Your readers will see that mechanics keep our world moving and growing.

A school trip to the zoo is the entertaining setting for learning high-interest Spanish vocabulary in this fun book. Readers will love knowing the Spanish words for their favorite animals, such as the jirafa (giraffe) and oso (bear). Pronunciations and a word key in each chapter further reinforce the terms, as well as carefully chosen, labeled photographs.

Learn how people collect data for weather predictions, the U.S. government census, emergency rescues, and more! This Spanish-translated title teaches readers about data collection, approximation, and estimation through practical examples.