Cómo podemos utilizar el tornillo?

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.

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

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

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!

Un periodista investiga unos extraños asesinatos y descubre que están ligados a una profecía antigua de la cábala judía.

The fascinating and glamorous world of fashion intrigues kids and adults alike. Young readers will learn how their favorite designers relied on hard work and talent to become the superstars they are today.

Explore the various islands that make up the Caribbean including the different plants and animals that inhabit this tropical paradise. Bright, dazzling photographs bring the Caribbean to life as readers are exposed to vocabulary related to the unique activities and customs of the Caribbean.