Alexander Graham Bell

Correlated to the science curriculum, our Spanish-language series describes how the types of homes that different animals build reflect adaptations to their environments. Through simple, easy-to-follow text, each volume looks at each type of home as a shelter from predators and weather and a place to store food and raise young. Young readers also learn how animal homes and human homes fulfill similar needs and functions.

Nuestro mundo, with Tu mundo, is a complete, two-level Spanish program for native Spanish speakers, providing focused treatment of Spanish-speaking peoples, including language, literature, culture, and history.

Did you know that nature is the world's largest science and engineering lab? Learn how designers and engineers use biomimicry to create or improve products. This title supports NGSS for Engineering Design.

Los contenidos de este libro se corresponden con los de la unidad formativa 0152, del módulo "Montaje de instalaciones solares fotovoltaicas", perteneciente al certificado de profesionalidad "Montaje y mantenimiento de instalaciones solares fotovoltaicas". Este libro se ocupa de la parte mecánica del montaje de una instalación fotovoltaica, empezando por su planificación y el aprovisionamiento de materiales y centrándose en el montaje mismo y en técnicas y procesos, como la sujeción, la impermeabilización, la colocación de paneles... 1. Organización y planificación para el montaje...