Lágrimas de sangre

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.

Do you think a snake would make a good pet? This fact-filled, Spanish-translated title uses bright, vivid images in conjunction with descriptive and informative language to let readers decide if they think these cold-blooded reptiles would make good pets. This 6-Pack includes six copies of this title and a lesson plan.

Simple text and photographs introduce the concept of "skip counting," or counting by groups of a certain number, and present items for practice.

Esta obra ha sido desarrollada para llevar los principales contenidos aeronáuticos a los entusiastas de la aviación, a los alumnos y futuros pilotos y a todo aquel apasionado del ámbito aeronáutico que desee aprender un poco mas de este fascinante mundo de la aviación civil. Aprenderemos los principales conceptos teóricos de la aviación. Un resumen de cada área aeronáutica, explicada de forma sencilla y agradable de leer, pero al mismo tiempo, desarrollando los contenidos mas relevantes de forma profesional y sumamente educativa. ¿Como son las pistas de los aeropuertos?,...