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 American Southeast stretches from the Atlantic Ocean to the Gulf of Mexico, including the states of Georgia, Florida, Louisiana, and Alabama as well as parts of Virginia and Maryland. But before that region was divided into states, native groups lived there. From how they found food to what their spiritual beliefs were, the book’s main content presents the traditional lifestyles of the Seminole, Choctaw, and Creek peoples, and the other groups that lived in the southeast. Readers learn even more from fun fact boxes and the historical images and full-color photographs that show what...

La religión ha acompañado la evolución del hombre desde las etapas más remotas de la Prehistoria. Sin embargo, existen grandes diferencias de concepción y de ritual entre unas y otras (religiones teístas y ateas, individuales y colectivas, oscurantistas y lógicas). Algunas son patrimonio de un pueblo o de una etnia. La religión ha utilizado el poder político y éste, a su vez, se ha valido de ella. En este primer volumen se analiza el origen y el desarrollo de las grandes religiones desde los orígenes del hombre hasta el fin del imperio romano, en el contexto de la evolución...

Libro bilingüe en español e inglés El grupo barcelonés The Pinker Tones presenta el libro Rolf&Flor, un libro bilingüe (español e inglés) para niños de entre 3 y 103 años, con ilustraciones de Miguel Gallardo y la participación de Albert Pla, David Brown (Brazzaville) y Mimi Miller. Rolf, un niño de Barcelona, y Flor, una niña de Nueva York, tienen vidas paralelas sin saberlo. Cuando se conocen descubren que son almas gemelas. Rolf, a boy from Barcelona, and Flor, a girl from New York City, are living parallel lives without knowing it. When they meet up they discovery are soul...

A haiku is a type of poetry that follows a pattern. Haiku started in Japan and has become popular around the world. Learn more about why people love to read and write in patterns. Try to create your own haiku, too! This full-color nonfiction reader will engage students in reading while introducing them to new vocabulary terms and concepts. Important text features include a glossary and a table of contents to develop students' comprehension and literacy skills. This Spanish book aligns with national and state standards and features exciting TIME For Kids content to keep English language...