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A human hand is found in the zoo's elephant enclosure. The rest of the teacher and ardent environmentalist turns up on the lawn. Although admired by his students, nearly everyone else seems to have a reason to want him dead.

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther. This 6-Pack includes six...

Can you identify construction vehicles? Do you know what a harvester does in a wheat field? Discover the trucks and machines in this little book that will excite kids of all ages.

Gayo Plinio (siglos I-II a.C.), conocido como Plinio el Joven, pertenecía a la rica aristocracia italiana propietaria de grandes posesiones agrícolas y administradora de magistraturas municipales. El apoyo de su tío materno, Plinio el Viejo, que los acogió a él y a su madre a la muerte del padre y acabó adoptándolo como hijo, fue decisivo en la vida de nuestro autor. Plinio el Joven agrupó en torno a su persona el círculo cultural y político probablemente más importante de su tiempo, del que formaban parte ilustres escritores como Marcial, Tácito, ya en el cénit de su gloria, o...