La admirable aventura de Malala

The United States has many places to live. People choose to live in small towns and big cities. Why do people live where they do? With examples from both the past and present, this Spanish book teaches beginning readers about the history of immigration to the United States and the factors that influence where people live. Dynamic images in conjunction with Spanish text provides first grade students with an inviting learning experience as they build their reading skills and knowledge of US history.

Algorithms might sound like a complicated tech term, but don't be intimidated, people actually use them every day. Using accessible language and full-color photographs, this book simplifies algorithms in an easy-to-understand way. Readers will be amazed to learn that an algorithm is just a set of steps for computers to follow to get things done. STEM topics from the Next Generation Science Standards are emphasized throughout the text. Sidebars featuring key terms help readers grow their tech vocabulary, and fact boxes provide additional opportunities to learn.

Lentas aguas estivales pasan ante los ojos de quien la tímida orilla pasea. Entretanto, barcas, hojas tiernas, alguna flor, la mano abandonada de un navegante, surcan el río. Efímeras ondas aparecen. Y así, el Támesis, en la plácida tarde, sostiene sin descanso la esperanza.

La cultura medieval islámica ha dado figuras espléndidas. Omar Jayyam, poeta y filósofo, algebrista y astrónomo, es sin duda la más fascinante de todas. Su pensamiento fue heterodoxo, su saber inmenso, su obra variadísima. De lo que nos ha llegado de su poesía no siempre es fácil distinguir lo auténtico de lo apócrifo, y de lo que sabemos de su vida, la historia de la leyenda. Su más importante aportación algebraica, la resolución sistemática de las ecuaciones cúbicas cortando cónicas, se procurará poner al alcance de un lector moderno sin alterar las ideas de fondo.