La Energía Solar (Solar Energy)

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.

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

El texto que el lector tiene en sus manos está dotado de una gran carga religiosa polémica pero conteniendo asimismo uno de los relatos más famosos e impactantes de conversión al islam del Mediterráneo occidental. Es un texto agresivo, pero también un texto espiritual. No es una mera obra justificativa de una conversión (¿por qué justificarse al cabo de tantos años?), sino la narración del tránsito de un espíritu, hecha desde los últimos pasos de la vida. El Turmeda escritor de éxito en catalán deja paso al Abd Allâh at-Tarchumân, hombre de éxito en Túnez, para recapitular ...

Introduce young readers to three-dimensional shapes with this exciting title! This Spanish-translated book follows the story of a contest to design a new playground. Challenge children to understand the concept of three-dimensional shapes, teaching them useful terms like dimension, height, width, face, base, and vertex. Young readers will use STEM skills to learn how to recognize new three-dimensional shapes like cubes, cylinders, and pyramids all around the playground! Let these vibrant images, clear examples, and helpful mathematical diagrams make geometry easy and fun!

Especial para los alumnos que ya han tenido contacto con un diccionario. Contiene más de 55 000 definiciones, ejemplos e información etimológica, y un apéndice final que ofrece una completa información sobre acentuación, puntuación, formación de siglas y abreviaturas, sufijos y modelos de conjugación verbal. Con prólogo de Alonso Zamora Vicente, de la Real Academia Española.

From art and architecture to politics, philosophy, and mathematics, "western civilization" owes a great deal to the achievements of ancient Greece, but what do we really know about this long-gone civilization? How did geography influence the politics of the Greek city-states? What's the difference between an agora and an acropolis? This book takes readers several thousand years into the past, when independent city-states ruled the Mediterranean Sea, to find the answers. Full-color photographs and maps, accompanied by accessible text, introduce readers to the many contributions the ancient...