De visita en el correo (A Trip to the Post Office)

Cuentos, poesias, chistes y 350 adivinanzas (algunas tradicionales y otras inventadas especialmente para este trabajo), constituyen una nueva propuesta que invita a seguir jugando con las palabras.Para todos los gustos y edades, este libro rescata y renueva la tradicion de las adivinanzas. De calles, de nombres y animales, de frutas y verduras, un verdadero maraton para adivinadores.

Children learn about the features of Tyrannosaurus Rex, what Tyrannosaurus Rex ate, and how it attacked other dinosaurs.

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...

Basic concepts about electricity for highschool level and college. Topics include: Electrical circuits, Ohm's law, serial and parallel circuits, electric power, CD circuits, etc. With questionnaire.