Energía del viento

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

A simple biography of the naturalist who founded the Sierra Club and was influential in establishing the national park system.

As day passes into night, travellers discover an abundance of Amazonian wildlife in a rain forest adventure full of colorful foliage and unusual creatures.

Por fin llegaron las tan anheladas vacaciones y Florencia, junto a su familia, emprende un largo y accidentado viaje a la playa. Todo lo viven con entusiasmo, energía y buen humor. Hasta los problemas los viven con una sonrisa. Su mejor amigo llegará a visitarlos, y con él experimentarán una serie de aventuras e historias, cargadas de misterio y emoción. La más importante, la excursión a una lejana playa desierta, los hará pasar el gran susto de sus vidas, y reforzará los lazos que los unen.

Una guía para aprender a dibujar cómics. El autor desarrolla el método a lo largo de treinta y un capítulos divertidos y pedagógicos.

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of data analysis. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience and show how data analysis works in the real world. In this book, readers look at data about the population of Chicago in order to learn more about the city. This...