Días de Descubrimiento (Discovery Days) ¿Quién cuenta?

¿Qué tienen que ver el 2012, el calendario maya, la geometría sagrada y el segundo advenimiento de Cristo? La respuesta puede estar en unos bellos y misteriosos diseños que desde hace más de treinta años aparecen en los campos de cereales de varios países. Se conocen como crop circles o círculos en los cultivos. Aunque en su mayor parte se manifiestan al sur de Inglaterra, muy cerca del templo de Stonehenge, existen registros de ellos en al menos cincuenta países de los cinco continentes. ¿Quién y cómo los hace? Nadie lo sabe a ciencia cierta, los autores de los crop circles...

When the Louisiana Territory was added to the United States in 1803, it about doubled the size of the young nation. It took years to clarify its boundaries and explore every square mile. How this momentous purchase came to be and its implications on the future of the United States are explained in detail in this book. Uncomplicated maps and simple language help developing readers and those in need of review to understand the many changes in this land that started with its purchase in 1803.

GRADES PK–2: This 16-page Spanish title (8’’ x 8’’) introduces early readers to the zebra—what they eat, why they travel long distances, and how they fight predators! FEATURES: Simple Spanish text and vivid photos present fascinating facts about an amazing African animal. Comprehension questions are included to advance learning. EARLY BILINGUAL LITERACY: Help young learners strengthen their bilingual skills—add the English version of this title into your collection, too. BUILD A LIBRARY: Collect every title from the collection to stock your home or classroom library. Reading...

Mamíferos I 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.