La Energía Solar (Solar Energy)

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.

Defines pulleys, 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.

Describes sexually transmitted diseases, including AIDS, syphilis, gonorrhea, and genital herpes, and discusses their medical dangers and where to get help.

«Si buscas personajes incansables y entretenimiento al cien por cien, necesitas leer a Parker.» JANET EVANOVICH Cuando April Kyle, serena, madura y guapísima, entra en el despacho de Spenser, el detective tarda unos minutos en reconocer a su antigua cliente. Convertida en madame y bien situada, ahora April gestiona una empresa de prostitutas de lujo en el barrio bostoniano de Back Bay. Su negocio, en el que sólo participan mujeres, parece prosperar, pero sus problemas empiezan cuando unos hombres quieren arrebatárselo. Años después de haberla ayudado a empezar una nueva vida, Spenser...

Do you think a snake would make a good pet? This fact-filled, Spanish-translated title uses bright, vivid images in conjunction with descriptive and informative language to let readers decide if they think these cold-blooded reptiles would make good pets. This 6-Pack includes six copies of this title and a lesson plan.

One of the most popular narrators of his time, Arthur Conan Doyle, was a visionary man with attitudes which were far ahead of his time. In this book we will know in depth his biography, his work, beyond the creation of the illustrious Sherlock Holmes, and his spiritualistic inquisitiveness.