Paul Revere

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!

Nuestro mundo, with Tu mundo, is a complete, two-level Spanish program for native Spanish speakers, providing focused treatment of Spanish-speaking peoples, including language, literature, culture, and history.

Think there's just one fairy tale with an overworked girl and wicked stepsisters? Think again! Cultures all around the world have their own Cinderella stories. Visit Canada, China, Egypt, and France, and find out whose "glass slippers" are made of red silk, and whose "fairy godmother" is a fish. Fully translated Spanish text.

El gatito, la pequeña jirafa, el potro y la mariquita se esconden tras las cubiertas de estos libros ilustrados con fotografías espléndidas y textos cuidados que nos descubren todos sus secretos, desde que nacen hasta que son adultos. Cómo comen y dónde duermen o qué razas hay son sólo algunas de las cosas que los pequeños lectores aprenderán con estos libros.