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.

Go for the goal with this text, which examines fascinating female sports heroes who’ve proved to the world that gender is no barrier to athletic success. Readers will delight in learning about the lives of Mia Hamm, Wilma Rudolph, and the Williams sisters, as well as other important women who’ve broken barriers in sports. Readers will be inspired to pursue a career in athletics after learning about how others have achieved success in spite of great obstacles. The biographical nature of the text supports social studies curricula, and fact boxes and a comprehensive timeline provide...

A ver cómo os lo explico... Ser diva es, en definitiva, una actitud ante la vida. Una forma de vivir. No tienes por qué vestir ropa de marca o ser una modelo de Victoria's Secret. Basta con que creas que lo eres (sí, la chica de las alas) y uses la calle como tu propia pasarela particular mientras caminas con los auriculares puestos escuchando una canción que te haga sacar lo mejor de ti. A una diva no se la puede achantar. Nunca. Es más, si adoptas la actitud de manera continuada que te voy a contar en este libro, enseguida verás cómo a ti tampoco te achanta nadie. Tus amigos, tu...

O es un buen título, desde luego. Suena corto y rotundo, juguetón, es fácil de recordar, y tiene algo de ese enigma indescifrado de los relatos de Alejandro Pedregosa. Historias breves, intensas, portentosas, escritas con la maestría de un artesano minucioso, y que traen un lejano regusto de leyenda, de fábula moral y atribulada. Un retablo de personajes de una existencia efímera que aparecen tras el telón y que saludan desde el escenario antes de enfrentarse a su destino, trágico a veces, con la resignación del penitente. Todo narrado con un estilo preciso y elegante, nunca exento...

The idea of the Roaring '20s conjures up images of speakeasies, women with short, saucy hairdos, and hot jazz. Readers will learn about the historical events that define this decade, including the devastating war that preceded it. An explanation about project-based learning will help readers understand how it can help them research their topic in unique and interesting ways. Constructive suggestions offer ideas for projects, while encouraging readers to take their studies in new and interesting directions.