¿Qué hace a una familia?

Animals do not brush their teeth, but they still have ways to keep their teeth clean. Read to find out how. Paired to the fiction title Going to the Zoo.

The first Thanksgiving was a celebration. The pilgrims were thankful for the harvest they planted. Find out what the pilgrims ate for the first Thanksgiving. Paired to the fiction title A Year of Fun.

It takes different parts to build a house. The floor is built first. Walls need to be added next. Windows and doors, too. Learn about the steps it takes to build a house. Paired to the fiction title We Have a Box.

En este diccionario ilustrado para niños Clifford, el gran perro colorado, y sus amigos describen cada palabra por medio de oraciones sencillas. Incluye una sección especial sobre los números, los opuestos y mucho más.

Cuando Arthur Miller escribe y estrena en 1955 Panorama desde el puente es, sin duda, un autor ya consagrado tanto en Estados Unidos como en el resto del mundo. Una vez más, el dramaturgo norteamericano sigue empeñado en mostrarle al hombre contemporáneo quién es y cómo vive, y le invita a reflexionar sobre quién podría ser y cómo podría vivir. Esta obra tiene su origen en una historia que Miller escuchó mientras trabajaba en los astilleros de Brooklyn: un estribador había denunciado a dos hermanos ante las autoridades de Inmigración. El tema de la inmigración es justamente el...

A biography of Cesar Chavez, from age ten when he and his family lived happily on their Arizona ranch, to age thirty-eight when he led a peaceful protest against California migrant workers' miserable working conditions.

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!