Los fósiles y las rocas

What has a head, two tails, and shoots across the sky? A comet. Coming from the far edges of the solar system, most comets travel around the Sun, while meteors appear as flashing streaks of light in the night sky. Explore these amazing celestial wonders as they zip through space! This book looks at the difference between comets and meteors and their effects on Earth. The physical characteristics of each are identified in detail. This book won’t come crashing down! It’s filled with fun facts that give additional information on this exciting science topic. This book allows students to use...

Based on the life of the great Mexican painter Diego Rivera, this book allows children to learn about his childhood in Guanajuato, his life as an artist, and his works of art. The vivid and colorful illustrations will surely delight young readers!

The Grand Canyon is a "grand" place to learn data analysis! Through an examination of its rocks and fossils, students will learn data analysis while reading about a fun-filled trip to Grand Canyon National Park. This Spanish book uses real-world examples to teach math concepts, and incorporates nonfiction reading to increase vocabulary and comprehension skills. The challenging practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Essential text features like a glossary,...

Tabula Gratulatoria. Introducción. I. Biografía. II. La ideas. III. Contenido y estructura de las Cartas de Relación. IV. Las Cartas de Relación y la historiografía de América. V. Manuscritos y ediciones. Noticia Bibliográfica. Bibliografía Selecta. Nota Previa. CARTAS DE RELACIÓN: Primera relación. Segunda relación. Tercera relación. Cuarta relación. Quinta relación. Variantes Textuales. Glosario. Índice de Láminas.