Cómo podemos utilizar la palanca?

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

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.

En este breve libro, que no breviario, cabalgan hermanadas la poesía japonesa occidentalizada, vale decir el haiku y el senryu, que en apenas diecisiete silabas divididas en tres versos sin rima expresa diversos sentimientos; la glosa, el soneto, el madrigal y el poema libre, realengo, que no atiende las estrictas normas de la métrica. Cabalgan también cómodamente, en su carruaje poético, los recuerdos únicos de la tierra que me vio nacer, Marabal, donde quedó sembrado mi espíritu y que muchas veces visito en sueños, repetitivos, de añoranza, de arrepentimiento por el abandono, de...

What did people use to buy things before money was invented? Where is money made? Find out in this inviting book that informs readers about coins, paper money, the Federal Reserve, exchange rates, and checking accounts. Featuring a timeline of moneys history, detailed photos, stimulating facts, clear, informational text, and a glossary that will assist in improving vocabulary, this Spanish-translated nonfiction title will keep readers engaged from cover to cover.

It is the third Monday in January and school is closed. But do you know why? It's Martin Luther King Jr. Day. Turn the pages of this book to find out what dream Dr. King shared with the world, who Mohandas Gandhi was, how one brave woman helped Martin Luther King Jr. change history. Each book in the Holiday Histories series describes one of America's holidays or special days. Explore the history of each day and learn the real reason why it is important. Discover what special meaning each day might have for you.

Con este libro mágico podrás dibujar todo lo que quieras: animales, plantas, exploradores, piratas... Y luego puedes borrarlo y volver a dibujar una y otra vez.