Cómo funcionan los parques de diversiones (How Amusement Parks Work) 6-Pack

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.

Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.

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. This 6-Pack includes six...

Where is your brain exactly? What does it do? Use your brain to read this engaging, Spanish-translated title and learn all about it!

This bestselling title in the highly acclaimed SeeMore Readers series is now available in Spanish. The same fascinating content as SUPER STORMS.

¿Y si el universo no pesara nada y la materia no existiera realmente? Lo que parecería ser una duda legítima para un erudito místico de los Vedas Indios es, en cambio, un resultado embarazoso de la aplicación de la Relatividad Restringida a las observaciones obtenidas por un grupo de astrofísicos, que han medido la radiación cósmica de fondo de nuestro universo. En los albores del nuevo milenio, el satélite WMAP, más allá de proporcionarnos una medida del cosmos, nunca antes obtenida, ha creado bastantes quebraderos de cabeza respecto al concepto de universo, en el que todavía hoy ...

Cumpleaños feliz, de Roxana Popelka, es una antología de poemas escritos y publicados a lo largo de veinte años (1989-2009). En ella reúne una colección de textos con múltiples registros e interpretaciones que ha ido trazando desde 1989. Desde los poemas postmodernos de su primera etapa (“Pesadilla Roja”, “Caballos de carreras”); pasando por los textos aforísticos (“Moscas”, “No hay nada que recordar”); hasta los más alejados de las convenciones poéticas y conscientemente políticos de su tercera etapa (“Pequeñas comodidades”, “Mis vecinos”). Por último,...

Christopher Columbus landed in the West Indies on October 12, 1492. Today, October 12 honors Columbus’ adventurous spirit as well as his Italian-American heritage. Easy-to-follow bilingual text in English and standard Latin American Spanish explains the holiday’s history and contemporary celebrations in accessible terms. Photographs illustrate Columbus’ life as well as modern celebrations of the holiday in his honor.