La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

Even as the world changes, skilled labor will always be needed. There's nothing quite like the ability to create things with your skills and your own hands. Carpenters use their skills to build things we use every day, including items such as furniture, buildings, and bridges. They read building plans, choose materials, design, and create. This book teaches kids that to become a carpenter, you have to use a lot more than a hammer and nails; you need your brain too. Photographs and diagrams enable readers to make key connections with the text.

Discusses the physical characteristics of great white sharks that combine to make them such able predators.

La serie Cienciaenshorts nace para dar cabida a pequeños relatos que acercan al público de forma amena diferentes aspectos de la ciencia en formatos literarios. Obras menores solo en extensión. Se trata de una fórmula imaginativa que puso en marcha hace años nuestra editorial en forma de concurso, donde los autores de los relatos fueran científicos-escritores con voluntad de trasmitir con precisión conceptos científicos a la sociedad, de una manera comprensible para esta. El jurado del II Concurso de relatos científico-literarios "¿Te atreves...?" estuvo compuesto por: César de...

Describes the U.S. Navy's Blue Angels, including their planes, the formation and maneuvers of their air shows, and team member duties. Written in English and Spanish.