Energía del viento

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.

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

Some of the most powerful things in the world are so tiny they can't be seen with the naked eye! Readers will be amazed at what they see when they take a glance at the world of the mini but mighty in this stunningly fascinating Spanish-translated nonfiction title that features remarkable images and graphics, informational text, index, and glossary. Through these features, readers are able to explore and discover such micros as DNA, atoms, bacteria, phytoplankton, and nanotechnology items like nano-robots and microchips! This 6-Pack includes six copies of this title and a lesson plan.

Surveys the life of Swiss/German immigrant John Sutter, on whose land gold was discovered in the mid-nineteenth century, spurring the California gold rush and westward expansion.

Discusses the various features of Australia, including its climate, mountains, rivers, lakes, animals, vegetation, coral reefs, flightless birds, population, and cities, and history of the Aborigines.

Descubre a 25 supercient�ficas que cambiaron el mundo y demostraron que �las chicas son de ciencias! #ChicasDeCiencias �Sabes cu�ntos descubrimientos cient�ficos debemos a las mujeres? Aunque en los libros de historia parezca que las ciencias son cosa de hombres, de eso nada: desde Agnodice, la primera m�dica conocida de la historia, hasta Rosalind Franklin, la qu�mica que descubri� la estructura del ADN, pasando por Vera Rubin, la astr�noma que vio lo que nadie ve�a, las mujeres han sido pioneras en ciencias desde el inicio de los tiempos. Y aun as�, �podr�as...