La Segunda Guerra Mundial (World War II)

The early nineteenth century in the United States was a study of contrasts. On the one hand, the Jazz Age brought cultural liberation, vivacity, and reckless consumption; on the other, the Great Depression brought poverty and desperation to millions. Explore these periods in American history through the eyes of the people who lived them.

El máximo de información en el formato más manejable Un diccionario que concentra gran cantidad de información, con: Más de 26 000 entradas Más de 46 000 definiciones que describen lo esencial del significado de las palabras Acepciones ordenadas por criterio de uso Numerosas notas de ortografía, morfología y uso Adaptado a la norma ortográfica de la RAE

For ages, the idea of machines that think and act on their own has gripped scientists, thinkers, and the general public. This book explores the history of artificial intelligence (A.I.), and how science fiction is quickly becoming science fact. It examines the technologies involved in A.I. and its inevitable effects on work, life, health, and many other aspects of human society. Rooted in history and science, this book provides an inside look at a topic that captivates engineers, scientists, and dreamers, but also raises important ethical issues and challenges how we see ourselves and our...

Can you spot the shapes on a birdhouse? How many shapes can you find? Beginning readers will enjoy learning basic shapes including circles, triangles, squares, and hexagons with this brightly illustrated Spanish book. With simple, repetitive text, this full-color text uses real-world examples to teach basic math concepts. Beginning readers will develop their math and reading skills and be introduced to early STEM themes. The Math Talk section includes questions that will increase understanding of basic math and reading concepts and develop students' speaking and listening skills. Learning...

Can you find these in the book? robin, tulip. What is your favorite season? Books in the Seasons series explore seasonal changes from a child's point of view. Fin out about the sights, sounds, tastes, and smells that each season brings.