Cómo podemos utilizar el tornillo?

Solar Energy Is Explained. Included In This Book Is Where It Comes From, Who Uses It, And The Positive And Negative Benefits Of Using It. Correlated To Common Core, Texas TEKS, Virginia Sols, And Georgia Performance Standards.

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

This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.

Interesting facts and experiments explore the dynamics of a race car engine to teach about air flow and drag, safety equipment and roll cages, the fuel system and horsepower, suspension and track bars, internal combustion, why race cars don't have speedometers, how roof flaps are designed like airplane wings, and more.

What does it mean to be a good citizen? Full-page, color photographs accompany real-life examples of good citizenship that young readers will understand, relate to, and be inspired by.

In this illustrated book for children, readers will discover information about animals and can lift the flaps on the pages to find even more.

Estos diarios de Isabelle Eberhardt, escritora suiza convertida al islamismo, que dedicó gran parte de su vida a recorrer el norte de África bajo el nombre de Mahmoud Essadi dan testimonio de la vida de una mujer valiente y sensual, de una existencia marcada por la huida, el exilio y el viaje. Sus aventuras sexuales y su coqueteo con las drogas hicieron que Isabelle Eberhardt fuera amada por unos y odiada por otros, sin lograr el equilibrio que anhelaba para su corta vida llevada al límite. Las notas recogidas en estos diarios, que abarcan el período comprendido entre 1900 y 1904 –poco...