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.

In 1862, the American Civil War was underway, actively tearing the United States apart. At the start of the war, President Abraham Lincoln's main goal was preserving the Union, but he was now ready to make a stand on slavery. The Emancipation Proclamation was one of the most important documents of its time, but its contents can be confusing. This volume gives readers context for the proclamation, as well as explains what it says and its results, in uncomplicated language appropriate for those reading below level and those looking for a review of this subject.

Explore our solar system and Earth's place in it as readers flip through the pages of this Spanish-translated nonfiction title. Featuring vibrant images in conjunction with accessible charts and diagrams, readers will be fascinated from cover to cover!

¡El entrenamiento de Pánfilo se intensifica! Después del último ataque de los monstruos, toda la aldea se prepara para hacer frente a la próxima ofensiva. Con la ayuda de sus amigos, Pánfilo deberá enfrentarse al mayor peligro de su vida y redoblar sus esfuerzos para convertirse, por fin, en el guerrero que siempre ha soñado ser. Sin embargo, a Herobrine no le hará mucha gracia la idea...

Ants are so important to our ecology that some scientist fell that if ants ever disappear so might humans! SOY UNA SEMILLA es un libro de la serie Hola, lector! que muestra la diferencia entre dos semillas, asi como su evolucion hasta llegar a convertirse en plantas. Los ninos disfrutaran del texto dinamico con el que esta escrito este libro.