Cebra

As a land that’s constantly in flux, Earth sometimes reveals clues about the plants, animals, and other organisms that lived long ago. Fossils teach us much about what life was like millions of years ago, answering the questions of how Earth changed and maybe even why it changed. This essential Earth science topic is thoroughly explained through manageable text, fact boxes, informational charts and diagrams, and a glossary and index. Readers will become young Earth detectives by the time they’re through with this text!

¿Regalas detalles de San Valentín a tus familiares o amigos? Aprende acerca de esta celebración de amor y descubre cómo la gente muestra su afecto en este día especial. Las fotografias llenas de color y el texto cuidadosamente organizado en niveles hacen de este ejemplar una útil introducción a este día especial. Las preguntas de pensamiento crítico a nivel apropiado ayudan a desarrollar habilidades de lectura informativa. Do you give valentines to your friends or family? Learn about the holiday of love and find out how people show their affection on this special day. Full-color...

Presenta una selección de experimentos y actividades diseñados para enseñar los principios de la aviación y de la ciencia del espacio, que incluye fabricar un planeador, construir los instrumentos del vuelo, y diseñar y construir un cohete simple.

Did you know that most animals in the world don't have backbones? Learn more about invertebrates in this engaging, Spanish-translated nonfiction book. Readers will learn all about mollusks, arthropods, arachnids, and crustaceans while being stimulated from cover to cover with its detailed images and charts, intriguing facts, and informative text. This 6-Pack includes six copies of this title and a lesson plan.