¿Por qué hibernan los animales? (Why Animals Hibernate)

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

Al comenzar la carrera parecia obvio que Eric Liddell seria superado. La multitud en el estadio olimpico enmudecio cuando el corredor escoces rehuso ser sobrepasado al cruzar la linea de meta, el gentio irrumpio en un aplauso que se oyo en todo Paris. Eric Liddell habia hecho lo imposible, se habia batido un nuevo record munidal. Aquella misma semana Eric rehuso correr el domingo en la carrera de 100 metros que asombrara al mundo. Pero su increible victoria en la carrera de 400 metros fortalecio aun mas su fe en la promesa de Dios: "A aquel que me honra yo le honrare." Unos anos mas tarde...

Como en el afamado cuento, Caperucita Roja y su abuela salen ilesas. Pero esta historia no termina bien... para el libro. Almas sensibles y amantes de los libros, ¡favor de abstenerse!

Our solar system is made up of the millions of objects in the sky above us, including the Sun, moon, stars, and planets. This book examines the four planets closest to the Sun, known as the rocky planets. All four planets, Mercury, Venus, Earth, and Mars are described with information about their atmosphere, landscape, orbits, and Fun Facts that give additional information about each of these rocky planets! This book will allow students to use observations of the Sun, moon, and stars to describe patterns that can be predicted.

Exploración espacial is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.