La naturaleza de la materia (The Nature of Matter)

Introduce students to immigration in America in the 1800s, and how it affected the United States. With this Spanish-translated book, readers will discover topics such as Ellis Island, Angel Island, and assimilation. Primary source images, fascinating facts, a glossary, and other features keep students engaged and help them better understand the social studies content.

Read Along or Enhanced eBook: Take a journey into the wild world of reptiles and amphibians! Readers will learn about crocodiles, lizards, snakes, tortoises, and salamanders. Featuring a glossary, index, colorful images and charts, intriguing facts, and clear, informative text, readers will be sure to be enthralled as they move through this engaging, Spanish-translated book.

In the 1800s, a Choctaw girl becomes friends with a slave boy from a plantation across the great river, and when she learns that his family is in trouble, she helps them cross to freedom.

In life there are lots of things that come and go, transform, or get left behind. It happens to everything . . . except this. This book deals with life changes and the passage of time with a great deal of sensitivity. To reinforce the message, each scene includes a page with special paper that invites us to witness the transformation.

Black holes are neither holes nor black. They're invisible and packed with matter! Future astronomers will find out many more fascinating facts about these space phenomena with this intriguing book. Carefully crafted text encapsulates the most important information about black holes, such as how scientists locate them and their significance in a star's life cycle. Amazing photographs support critical concepts and inspire a true appreciation of the spectacles of space.

El padre de Juan José Millás tenía un taller de aparatos de electromedicina. Al recordar un momento en qué su padre estaba probando un bisturí eléctrico sobre un filete, comprendió que la escritura, al igual que el bisturí, cicatriza las heridas en el mismo instante de abrirlas. De esta revelación nació El mundo, para cicatrizar una herida que se abrió cuando su familia emigró de Valencia a Madrid. Ese día, nació una obra maestra.