La vida en los océanos

In AD 79, the residents of the booming Roman city of Pompeii were shocked when a nearby mountain exploded, releasing superhot ash, rock, and gas on the surrounding areas. What happens next is the extraordinary account of a volcano in action. Though the people who didn't flee Pompeii were doomed, the volcano preserved their remains, allowing us to better understand a fascinating time in the Roman Empire. Astonishing photographs of Pompeii, primary source records of the occurrence, and riveting text are just some highlights of this high-interest volume.

These biographies introduce young readers to important figures in American history. Ideal for reports and correlated to the social studies curriculum, the series presents a straightforward account of each individual's life and times and describes how each person contributed to the shaping of our nation.

The Spanish-language edition of Wilma Unlimited. Before Wilma was five years old, polio had paralyzed her left leg. Everyone said she would never walk again. But Wilma refused to believe it. Not only would she walk again, she vowed, she'd run. And she did run--all the way to the Olympics, where she became the first American woman to earn three gold medals in a single olympiad.

Este libro contiene herramientas sencillas para que los niños se relajen, para que practiquen, solos o con la ayuda de un adulto, la atención plena o mindfulness. A través de él llegarán a la calma y la concentración, y así potenciarán y mejorarán todo aquello que ya tienen en su interior: confianza, autoestima, concentración, intuición, creatividad...