Algoritmos: la base de la programación de computadoras (Algorithms: The Building Blocks of Computer Programming)

Describes where fossil fuels come from, their uses and forms, the harm they cause to the environment, and sources of renewable energy.

Es un poemario donde se funde la racionalidad y la belleza en poemas. Que caen como un rayo electrificando el espíritu. Algunos tan ruidosos, otros livianos como una una hoja seca de otoño.

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

Sonia y sus amigos siembran un jardín, y cada uno contribuye a su manera. Rafael tiene asma y a veces debe mantener la calma para poder respirar mejor, lo que le permite pintar bellas rocas para el jardín. Anthony utiliza una silla de ruedas para moverse rápidamente y dirigir al grupo. Anh tartamudea al hablar y prefiere escuchar. Por eso sabe cómo sembrar cada flor. Todos los amigos son diferentes, pero todos tienen algo en común: ¡les gusta hacer preguntas y saber más acerca de sus compañeros! En esta tierna historia que refleja la diversidad, escrita por Sonia Sotomayor, juez del...

Earthquakes can leave people and property in bad shape. At times, they can be deadly. Find out about the science of studying earthquakes and the men and women who track the movements of the ground below us. Created in collaboration with the Smithsonian Institution, this Spanish book ignites a curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides English language learners through every step of the engineering design process. Inspire students to pursue a STEAM career with career advice from a real person working in a STEAM field. Discover...