Energía del viento

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.

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

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This Spanish-translated book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, who works against it, and all other forces that contribute to a successful dive or climb. After reading this Spanish-translated book, readers can decide if they will ever be interested in engaging in one of these extreme sports.

Mujeres, mujeres, mujeres. Apenas estamos descubriendo cuántas científicas, pintoras, escritoras, activistas, cocineras y tantas otras mujeres se han quedado sin entrar en la Historia con H mayúscula a pesar de su talento, valor y dedicación. Todavía hay muchas historias por descubrir. El colectivo Cúmulo de Tesla, conformado por mujeres (y un hombre) provenientes de muchas disciplinas, narra en este libro las andanzas de 21 mujeres y grupos de mujeres. Cada una, desde el lugar que le tocó o el que escogió —el aula, la política, la cultura o el convento— dejó huellas indelebles. ...

Take a trip to the British Museum as you explore its fascinating objects and geometric shapes! This famous London museum was built for exploration - and for learning geometry. Learn about its history and artifacts as you build your geometry skills. This Spanish math book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems,...

El dueño de una empresa farmacéutica se enfrenta a una crisis de ventas. Un colaborador le propone un plan perfecto: robar una cepa de «gripe española», un virulento virus que causó la pandemia de gripe más mortífera de la historia. Cuando la OMS aprobara la creación de la vacuna, el laboratorio ya la tendría lista. Una operación que les permitiría no sólo salvar la situación, sino también hacerse inmensamente ricos.