La selva amazónica (Amazon Rainforest)

Most of the Earth's changes happen over millions of years, but earthquakes can force significant changes to the land in just a few moments. Readers will learn the science of plate tectonics and its role in the development of earthquakes around the globe. They will also learn that not all rocks are created equal. In fact, rocks are all different ages! This Spanish-translated book concludes with images of the damage and destruction that earthquakes can cause.

This nonfiction Spanish book teaches students about producers and consumers, and introduces them to important scientific concepts and vocabulary terms like nutrient cycle, food web and photosynthesis. The intriguing images, detailed diagrams, and stimulating sidebars will keep students connected to the text. The fun lab activity provides a real-world learning experience that supports STEM instruction. Aligned to state and national standards, the leveled text supports differentiation. Keep students reading with this fascinating Spanish book.

A guide to some of the most extraordinary places, objects and sights in the cosmos, from the amazing worlds of our olar system to distant galaxies and glowing nebulae--and almost everything in between. Includes 100 objects from throughout the universe, arranged from closest to our planet to farthest away. Discover the best-kept secrets of space.

Provides vocabulary in Spanish and English, grouped by different activities and topics and accompanied by simple illustrations.

Stefan Zweig tuvo durante toda su vida la necesidad de intercambiar correspondencia, de establecer y mantener contactos. Mediaba la veintena cuando empezó a enviar sus primeros libros, junto con unas líneas de cortesía, a personalidades ya célebres por aquel entonces. Muchas de las respuestas dieron pie a una relación personal cuyos testimonios se han conservado. Con el presente volumen, los compiladores han querido transmitir una impresión lo más concreta posible tanto del peculiar talento de Stefan Zweig para dirigirse a sus corresponsales como de sus manifestaciones personales. Para ...

People today refer to the Midwestern and prairie states as flyover country. During the Civil War, crossing those areas was the biggest obstacle in uniting the East and West Coasts of our divided nation. An act of Congress in 1862 authorized the Central Pacific and the Union Pacific railroad companies to build a railroad that would link the coasts. Seven years later, on May 10, 1869, an overwhelmingly immigrant labor force completed the task when a rail line was join in Promontory, Utah. The states had become united at last.