Cómo podemos utilizar la palanca?

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

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.

Examines the nature of inclined planes and wedges, how they can reduce the amount of force necessary to perform work, and ways in which they are used.

Learn the many steps that must be followed to make a car! With vibrant, detailed photos, informational, Spanish-translated text, and a chart to show steps of the assembly line, even the most reluctant reader will want to learn more about this fascinating factory!

Conocer las cosas cuando se estan formando, quiere decir comprenderlas mejor. Los elementos de esta transformaicon pueden verse en gran parte en este libro que Bruno Munari ha compilado, basandose en cincuenta lecciones por el profesadas en la Universidad de Harvard.

A selection of dazzling, full-color graphic novels offer an appealing way to deliver social studies content, chronicling the lives of inspiring individuals, from important historical figures to famous musicians.