Aviones y otras aeronaves

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...

Lights! Camera! It's time to explore the art of animation! This engaging, Spanish-translated nonfiction title allows readers to explore an exciting career as an animator. Readers will be introduced to the history of animation and find out what techniques and equipment animators used to turn their illustrations into the first animated shorts. Through stimulating facts, vivid images, sketches, photos, informative text, and an interview with a real-life animator, readers will discover everything about animation, including character development, storyboarding, and even how the Foley artists...

Estas novedosas propuestas lúdicas para el desarrollo curricular de la educación física son un magnífico ejemplo de cómo se debe tratar el juego motor. En este libro los profesionales de la educación física encontrarán, a lo largo de tres extensos capítulos, un amplio repertorio de experiencias lúdicas bien sistematizadas, originales, fáciles de aplicar y adecuadas a la edad de los alumnos. El autor clasifica los juegos en tres grandes apartados que responden a objetivos y necesidades diferentes: los juegos motores y de acondicionamiento con material alternativo, cuya finalidad es...

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.