En los juegos del parque (At the Playground)

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther.

Read Along or Enhanced eBook: Learn the secrets to artful cupcakes, oven-fresh bread, and other delicious baked goods in this delightful nonfiction title. Readers will learn how mathematics helps bakers measure their ingredients to make tasteful treats. Featuring vibrant images and charts, informative text, and fun, intriguing facts, this Spanish-translated nonfiction book will leave children fascinated by all the details that go into baking their favorite treats--like doughnuts and cookies!

This Spanish-translated book will be a hit with both thrill seekers and with those who prefer to stay safely on the ground. After an introduction to Newton's three laws of motion, readers learn the mechanics of various amusement park rides including roller coasters, Ferris wheels, merry-go-rounds, and gravity rides. They learn how to measure motion, and how kinetic and potential energy apply to their favorite rides. This 6-Pack includes six copies of this title and a lesson plan.

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, and who works against it, and all other forces that contribute to a successful dive or climb. After reading this book, readers can decide if they will ever be interested in engaging in one of these extreme sports.

Método dirigido a jóvenes y adutlos estructurado en tres niveles: elemental, medio y superior. Sigue un enfoque situacional basado en la sistematización de estructuras. Contiene una amplia tipología de ejercicios gramaticales. Puede utilizarse para la clase o para el autoapendizaje. Al final del libro hay un apéndice gramatical y un glosario de palabras. Incluye un CD audio para trabajar la destreza oral.

La industria aeroespacial es la segunda actividad más normada luego de las activi- dades nucleares; está regida por infinidad de normas, reglamentaciones, directivas, documentación específica y todo tipo de manuales de referencia obligatoria. La gran mayoría llega a manos de usuarios, operadores, talleristas, etc. en idioma in- glés, el idioma de uso aeronáutico por naturaleza. A ello se suma el hecho de que la industria aeronáutica no está aislada de las actividades humanas, sino que inte- ractúa, se nutre y hace su aporte a ellas creando la necesidad de un sólido...

Children explore the concepts of big and small in the world around them, from big round pancakes to tiny little seashells.

El racismo constituye una de las páginas más vergonzosas de la historia contemporánea. Una ideología del odio que ha marcado las relaciones entre las culturas y las naciones de nuestro tiempo presente. El presente libro trata de acercarse a las raíces históricas e ideológicas de la doctrina racista, a su desarrollo mundial durante los siglos XIX y XX y a su ocaso en nuestros tiempos. La cuestión se expone con un lenguaje claro, pero a la vez riguroso y muy contrastado, exponiendo numerosas citas de especialistas en el tema, o de las propias fuentes originales.