Ergebnis für "Spöken" in Wissenschaft & Technik

La rueda es una máquina simple. Una máquina es cualquier herramienta o aparato que facilita el trabajo. Las ruedas giran alrededor de un eje. Las ruedas nos permiten movernos más rápido de un lugar a otro. ¿Qué más pueden hacer las ruedas y los ejes?

This audiobook describes many different kinds, uses, and benefits of wheels and axles. Includes information on gears, sprockets, and cranks.

This audiobook serves as a companion to the print and eBook versions, where unbelievably detailed, close-up images of 20 common North American animals bring young readers eye-to-eye with wildlife found in their own backyards. Photographed against white backgrounds, the incredible creatures' colors, shapes, textures, and seeming personalities shine. Entertaining and educational narratives accompany the animals, highlighting fascinating natural history information.