Barredoras De Nieve/snowplows

This starter volume uses everyday examples such as a baseball and a beach ball to demonstrate the contrast between hard and soft objects.

In 1846, travelers heading for California became trapped high in the mountains of the Sierra Nevada. Snowdrifts surrounded their shelters, and food supplies dwindled. How they stayed alive remains one of the most gruesome stories in US history. However, some facts that have come to light recently through archaeological digs will surprise even those who think they know the story. This gripping book, including maps and images of the era, tells the true account of the doomed Donner party.

Este diario original, sin censurar, de una adolescente juda̕ afincada en la ciudad neerlandesa de Rt̤erdam, arroja una nueva luz sobre la historia de los judo̕s en la Segunda Guerra Mundial. Una peripecia vital similar a la de Ana Frank pero

This fantastic book for young readers explains how it all began--from what is in the universe and the solar system; what galaxies, stars, the sun, and the planets are; when the practice of astronomy began, what an astronaut is, and how they live in space. It serves as a fascinating and useful illustrated guide for kids.