Con la energía del Sol ebook

Learn how light pollution prevents us from seeing the stars and causes other problems as well. This Spanish book features a hands-on STEAM challenge that gives insight into how the engineering design process is used to solve real-world problems.

Politicians today in both Europe and the United States have succeeded in casting government spending as reckless wastefulness that has made the economy worse. In contrast, they have advanced a policy of draconian budget cuts--austerity--to solve the financial crisis. We are told that we have all lived beyond our means and now need to tighten our belts. This view conveniently forgets where all that debt came from. Not from an orgy of government spending, but as the direct result of bailing out, recapitalizing, and adding liquidity to the broken banking system. Through these actions private...

A young boy travels to China to learn about the people and culture of one of the world's most powerful nations.

" A Daniel, el trabajo en la oficina le resulta muy aburrido; su vida se ha vuelto de color gris. Por si fuera poco, descubre que, en los momentos más inesperados, se eleva desde el suelo. ¡Menudo problema!... ¿Qué puede hacer, por ejemplo, para cubrirse con la manta si la cama se ha quedado abajo y él está durmiendo en el aire?... Pero decide aprovechar su extraña facultad, y entonces... "

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...