La Energía Solar (Solar Energy)

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.

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.

A flexible suite of resources providing full coverage of the Cambridge IGCSE® Spanish as a First Language syllabus (0502) for first examination in 2015. Written by practising teachers, this workbook helps students further develop the skills acquired through the course. Practical exercises expand and enhance the materials in the coursebook, supporting students through the Cambridge IGCSE® Spanish as a First Language course.

Una guía completa de los dinosaurios fundamentales de Argentina y el sur del planeta, ilustrado y a todo color. Los dinosaurios más famosos de nuestro país, estrellas de la paleontología, ahora a tu alcance en este libro. Animate a descubrir todo sobre los animales que vivieron acá antes que nosotros.

Guadalajara esconde en su geografía un gran número de rincones desconocidos para la mayoría de los senderistas. Las 30 rutas que propone esta guía nos harán descubrir solitarios caminos de montaña, profundos barrancos y extensos bosques donde la naturaleza y el paisaje se han conservado casi intactos.Castros celtíberos, iglesias románicas y castillos medievales también nos acompañaran en esta selección de recorridos, evocándonos épocas pasadas.

Read Along or Enhanced eBook: Learn all about the incredible things your heart, lungs, arteries, and circulatory system do and how to keep them healthy and strong! With vibrant images and informational text in conjunction with supportive diagrams and stimulating facts, this Spanish-translated nonfiction title introduces readers to basic biology and vocabulary.