La Energía Solar (Solar Energy)

This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.

Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Historias Clásicas de la Biblia son contadas a los mas pequeños para entender las promesas y verdades que son simplemente presentadas para los corazones jóvenes. Cada historia incluye un verse de la escritura correspondiente, junto con una promesa relevante. Verdades bíblicas incluyen: Dios es el creador, Dios is fiel, Dios mantiene sus promesas, Dios escucha tus oraciones, Dios sabe que es mejor, Dios es indulgente. Ilustraciones brillantes y texto fácil de entender lo harán uno de los favoritas de la familia. Historias incluyen: ¡Dios Hizo Todo! Adán y Eva, La Arca de Noé, Padre...

Gorillas, wolves, chickens, and kangaroos. It might not seem obvious at first, but these species all have something in common: their individual members must all find their places within their groups. These power struggles can be dangerous! Read about the fierce world of animal alphas and how they make it to the top. This Spanish nonfiction book will keep students engaged in reading as they build their literacy, vocabulary, and comprehension skills. Important text features include a glossary, index, and table of contents. The Reader's Guide and culminating activity require students to connect...

Through vivid, engaging images, children will be introduced to different types of animals. Parents and children will enjoy a shared reading experience, with photographs showing animal parents and babies in their natural habitats. Young learners who do not yet know how to read, or those who are just beginning, will be inspired to tell their stories with this wordless book that supports early childhood literacy.

En este libro se desgranan para su correcto estudio y comprensión los contenidos necesarios para realizar proyectos de instalaciones eléctricas de baja tensión: su concepción, dimensionado, documentación (Proyecto Técnico o Memoria Técnica de Diseño MTD), ejecución, tramitación y puesta en servicio. La lectura del libro permite adquirir una visión de conjunto de las instalaciones eléctricas de baja tensión, mediante una descripción sencilla, gráfica y práctica, pero con una adecuada fundamentación teórica, pues, como dijo Ortega y Gasset, "Nada hay más práctico que una...