Cómo podemos utilizar el tornillo?

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

Eco-Friendly Energy Is Explained. The Most Current Information Is Provided While Establishing The Understanding That It Does Not Take Much To Make The World A Better Place.

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...

Pocas personas han tenido tanto impacto en la historia como Cristóbal Colón. Colón estaba convencido de que su idea de viajar desde Europa hacia el oeste iba a cambiar el mundo, pero ni él mismo llegó a imaginar cuánto. Murió sin saber que había descubierto un nuevo continente, donde habitaban muchos pueblos con nuevas maneras de ver y vivir la vida. ¿Como era este hombre que logró que los reyes de España pagaran un viaje que, a ojos expertos, era un gran disparate? ¿Quieres conocer a Colón? ¡Abre este libro y empieza a leer! --Page 4 of cover.

How many hockey sticks are there? How many hockey players? Early readers will learn to count cardinal numbers with this Spanish book for kids. With bright images and simple text, this full-color book develops students' math and reading skills. The Math Talk questions build fluency and comprehension of basic math concepts. Perfect for shared or guided reading, this nonfiction kids book is ideal for kindergarten and ages 4-6.