La Energía Solar (Solar Energy)

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

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.

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.

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

Historietas de humor que refleja las situaciones de todos los que sufrimos y disfrutamos con un hermano.

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...

Un juego que atraviesa los siglos sin envejecer: Monika Beisner ha seleccionado las más bellas adivinanzas de las tradiciones de todos los países. Los niños pueden jugar a encontrar en las bellas ilustraciones de Beisner las soluciones ocultas de los acertijos. Las traducciones del poeta José Emilio Pacheco le dan ritmo y encanto a los textos.

Explores The Number Twelve With Relationship To Time, Counting, And Things That Are Sold By The Dozen.