Cómo podemos utilizar la polea?

Young students will be enthralled with compelling portraits of famous figures who devoted their lives to improving the world. Includes historical photos and illustrations.

Solar Energy Is Explained. Included In This Book Is Where It Comes From, Who Uses It, And The Positive And Negative Benefits Of Using It. Correlated To Common Core, Texas TEKS, Virginia Sols, And Georgia Performance Standards.

Explains The Early History Of How The Bill Of Rights Came To Be And How It Is Used To Protect Citizens.

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

Ideal for young children. Sturdy books that will stand up to wear and tear with full-color illustrations and clear, simple text. Each one has a convenient carry-along handle.

Un día de verano, debajo de un árbol, la hermana de Alicia estaba leyendo un libro. Alicia la escuchaba, pero era un libro muy aburrido. De repente pasó un conejo blanco con levita corriendo y gritando: "¡Se me hace tarde!". Con el pretexto de alejarse de ahí, Alicia siguió al curioso conejo. Y así comienza una larga serie de aventuras en El País de las Maravillas... One summer day, under a tree, Alicia's sister was reading a book. Alicia listened to her, but it was a very boring book. She suddenly passed a white rabbit in a frock running and yelling: "I'm late!" On the pretext of...

It may be hard to believe that 140 characters are enough to get a message out to millions of people, but Twitter's users do so every minute. Twitter is vital in many different spheres. This book introduces readers to how they, too, can tweet purposefully. Users can promote their personal brands, network for jobs and gigs, or leverage the platform for political change, education, or worthy causes. This book offers young people ways to amplify their voices and build community via this dynamic tool, while staying focused and safe.