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.

Un libro completo sobre el cuerpo humano donde se explica, de manera gráfica y detallada, cómo funciona esa maravillosa máquina que es el cuerpo humano y la complejidad de la mente. Una práctica herramienta para llegar a una mayor comprensión sobre las motivaciones de los actos.

La madre de Claudia, la niña protagonista de esta historia, es muy peculiar: es tan pequeña que cabe en un dedal. Hay ventajas y desventajas para los tres miembros de la familia. ¿Qué divertidas situaciones se vivirán en este insólito hogar? Una estupenda historia que retrata con mucho humor las relaciones familiares.

Introduce students to world trade with this nonfiction Spanish book. Young readers will learn about the various services and goods that countries around the world provide, the different types of currency, and the difference between wants and needs. With images that support the text, students will be fully engaged and better understand the content.

Having a job and earning money are a part of everyday life for most people, especially adults. The concept seems fairly straightforward: one works to earn. This volume discerns the difference between a job and a career, as well as how a job can develop into a career. Readers will learn why a community's economy needs jobs, how paying someone to do a job helps the person who is paying them, and even about job loss and its consequences. The text also explains different jobs and their effects on the economy, such as those of professional, production, arts, and government and military jobs.