Incremento de la energía

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

Explains The Early History Of How The Bill Of Rights Came To Be And How It Is Used To Protect Citizens.

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

Spanish Language Edition. This Spanish version of the Picture Bible is as classic as the English version. A great Bible for young readers and is loved by people of all ages.

El libro se estructura en 8 bloques de contenido, cada uno de los cuales contiene varias Unidades hasta un total de 17. Cada Unidad se inicia con una página, que incluye:título de la unidad, foto motivadora, texto introductorio y contenidos que se desarrollarán en la unidad El desarrollo de cada Unidad se lleva a cabo dividiendo los contenidos en apartados y subapartados. Además, cada Unidad contiene otros elementos muy interesantes: actividades al final de los apartados, ejemplos resueltos al final de los apartados, curiosidades, datos, bibliografía y otros elementos que aparecen en los ...

Practice time measurement by timing races! Racing is all about having the fastest time, so accurate time measurement is very important for athletes! Young readers will learn all about how athletes measure racing times and will practice their mathematical and STEM skills. The Spanish-translated text, vibrant images, fun practice problems, and helpful mathematical charts in this title make time measurement seem exciting and simple!

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...