Cosmos en 3D

Interesting facts and experiments explore the dynamics of a race car engine to teach about air flow and drag, safety equipment and roll cages, the fuel system and horsepower, suspension and track bars, internal combustion, why race cars don't have speedometers, how roof flaps are designed like airplane wings, and more.

Catorce relatos, instantáneas dolidas y concisas, buscan abrir atisbos hacia el fondo oscuro que comunica el mundo de la infancia con su apertura hacia el mundo adulto, entendiendo por tal el universo del dolor en la época de la guerra civil.

The Industrial Revolution was one of the most dramatic eras of all time, filled with fascinating people, strange events, and incredible stories. This period of great change comes into sharp focus through each spread with detailed, accessible language. Each fact is complemented with vivid, carefully-chosen historical images and illustrations, and a caption that adds just a touch more history. Readers are drawn deep into the facts not covered in history textbooks, like working conditions, inventions, failures, and characters, to make this important history lesson fun and engaging.

Todos los vendedores queremos vender más, así que buscamos la forma de hacerlo examinando nuestro entorno. Así, rebuscamos con sacrificio en largos viajes entre las estrellas del sector o en el fondo de los mares de libros, que es donde deben habitar los súper seres que venden mucho. Este pequeño libro le mostrará que no debe embarcarse en nuevos y largos viajes a lo remoto. Las respuestas a sus dudas están dentro de usted. Hábil fue quien lo escondió ahí sabiendo que sería el último lugar en donde buscaría. El cambio vendrá desde su interior, y este libro le servirá de guía...

In this biographical book, young readers will learn about the brave life of Harriet Tubman. Readers will discover how Tubman bravely escaped from her life as a slave to cross the Mason-Dixon line into freedom and how she helped hundreds of other slaves into freedom through the Underground Railroad with the help of abolitionists. The vivid images, stunning facts, and supportive text work in conjunction with the helpful glossary, index, and timeline of Tubman's life to give readers an engaging experience as they move from cover to cover. This book has been translated into Spanish.