Energía del viento

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

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

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

This bestselling title in the highly acclaimed SeeMore Readers series is now available in Spanish. The same fascinating content as SUPER STORMS.

Muchos de los conflictos que se presentan actualmente a propósito de actividades mineras, petroleras e incluso de conservación se producen por los efectos sociales y culturales, siempre complejos y muchas veces inesperados, de estas iniciativas de desarrollo.

Describes the Boston Tea Party, including the events leading up to the party, its immediate effects on American-British relations, and why it is still an important event today.

Biography of Benjamin Franklin, a great American inventor, statesmen and diplomat as well as one of the founding fathers of the United States of America. In graphic novel format.