Cómo podemos utilizar el tornillo?

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

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.

El Mayflower es un barco que ha llegado a ser célebre en la historia de los Estados Unidos porque en 1620 transportó desde Inglaterra al grupo conocido como "los peregrinos", quienes serían los primeros colonos europeos en establecerse en Norteamérica. Ellos zarparon desde el puerto inglés de Southampton y bautizaron como Nueva Inglaterra a la tierra que los acogió. Como señala este libro, el Pacto del Mayflower designa el acuerdo que los hombres adultos de esta comunidad firmaron a bordo del barco para fijar criterios generales que sirvieran como fundamento para el gobierno de la...

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.

Comic-strip character Gaturro and his friends Gaturrin, Agatha, and Emilio come to life in this colorful book that follows their adventures. Fun storylines and vivid drawings bring Gaturro and his gang to life.

You think you know the story of "Little Red Riding Hood"? THINK AGAIN! This retelling of the classic story, told from the wolf's perspective, will give you a fresh spin on this famous tale. Was the wolf just really hungry for apples? Was Little Red Riding Hood rotten? This fun fractured tale will leave you with a whole new understanding of the classic story. Fully translated Spanish text. ¿Crees que conoces la verdadera historia de "Caperucita Roja"? ¡ES POSIBLE QUE NO! Esta versión del cuento clásico contada desde la perspectiva del lobo te trae el otro lado de la famosa historia....

Desastres naturales (Natural Disasters) is an exciting book about how estimations and predictions help save lives in natural disasters. Students will learn critical math concepts as they are engaged in reading about the properties of natural disasters. Practice problems and mathematical diagrams help students reinforce the importance of mathematics. This Spanish title includes a glossary, an index, engaging images, and easy-to-read text to help students build their math and reading skills.

Learn about the rich history of La Misión de San Antonio de Padua: how it started, the people who ran it, the indigenous population, and it’s legacy today.