Agujeros negros (Black Holes)

As a land that’s constantly in flux, Earth sometimes reveals clues about the plants, animals, and other organisms that lived long ago. Fossils teach us much about what life was like millions of years ago, answering the questions of how Earth changed and maybe even why it changed. This essential Earth science topic is thoroughly explained through manageable text, fact boxes, informational charts and diagrams, and a glossary and index. Readers will become young Earth detectives by the time they’re through with this text!

Presents color recognition through Bible stories and reasons to praise the colorful world God created.

Whether epic tale or legendary quest, the narrative texts in this series are adapted in a captivating style for each period, allowing the reader to track heroes and share their adventures, discover great civilizations, and learn about world history. The texts are based directly on original works or on a variety of authentic, ancient sources and tales. The narratives are enhanced by specially commissioned illustrations, photographs, and reproductions of ancient artifacts and documents. Mito, historia epica o busqueda legendaria, los textos narrativos de esta coleccion adaptados con estilo...

Visiting an aquarium is fun. There are many fish, sharks, birds, penguins, sea otters, and other creatures to see. Dive into learning subtraction as you read about the many animals at the aquarium! This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning subtraction easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading...