Tras los pasos de los-- esclavos

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.

Little readers will learn the essentials of the United States Marine Corps (how the Marine Corps keeps us safe, various jobs, weapons and machinery, and more) through easy-to-read, simple text. Readers will love the exciting full-bleed photographs, bolded glossary terms, and More Facts section. Translated by native Spanish speakers. Aligned to Common Core Standards and correlated to state standards. Abdo Kids is a division of ABDO.

Describes the frogs, toads, and salamanders of Mexico's Yucatan Peninsula, looking particularly at the wide variety of adaptations found in the few species that dwell there.

Reptiles y anfibios is one book in the Spanish-language Gran Atlas de la Ciencia series that covers today's most popular science topics, from digital TV to microchips to touchscreens and beyond. Perennial subjects in earth science, life science, and physical science are all explored in detail. Amazing graphics--more than 1,000 per title--combined with concise summaries help students understand complex subjects. Correlated to the science curriculum in grades 5-9, each title also contains a glossary with full definitions for vocabulary.