Agujeros negros (Black Holes)

For many years, people believed there were nine planets that orbited the sun. Now we say there are eight. What happened to the ninth planet, Pluto? What are the different planets like? What exactly makes a planet a planet? These are the many intriguing questions answered with this high-interest book, crafted to be accessible for readers of all levels. Young astronomers will be especially fascinated by the stunning photographs and the "Make the Grade" fact boxes.

The Spanish edition of award-winning picture book biography, CHEF ROY CHOI AND THE STREET FOOD REMIX, on the chef who kickstarted the food truck movement. "Parte biografía, parte aventura culinaria, este vibrante y energético libro capta la esencia de la escena de la comida callejera en L.A. Sus páginas están inspiradas en el arte del graffiti, y el texto tiene un sabor de hip-hop que mezcla la comida, comunidad, e identidad en un delicioso banquete para los ojos y orejas que refleja el crisol cultural de los Estados Unidos." -- Honor del Premio Sibert para el Libro Informacional Más...

In 1862, the American Civil War was underway, actively tearing the United States apart. At the start of the war, President Abraham Lincoln's main goal was preserving the Union, but he was now ready to make a stand on slavery. The Emancipation Proclamation was one of the most important documents of its time, but its contents can be confusing. This volume gives readers context for the proclamation, as well as explains what it says and its results, in uncomplicated language appropriate for those reading below level and those looking for a review of this subject.

B+En algunas personas, bajo las apariencias de una ramplona trivialidad, surge a veces la revelacion de las estructuras profundas de lo real.B; B+Las Tres graciasB; , B+El puenteB; y B+El burdel de las gitanasB; son tres relatos iniciaticos que, como otras obras narrativas de Mircea Eliade, estan estrechamente ligados a sus estudios sobre religion y mitos. Sus personajes, entre la memoria y el sueno, transitan las melancolicas calles de Bucarest o recorren los paisajes rumanos en busca de una respuesta a la existencia y sus misterios.

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 algorithms and procedures. 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 algorithms and procedures work in the real world. In this book, readers learn how to use instructions to build their own drone. This nonfiction...