Inundaciones, represas y diques

Explains the idea of taking turns and emphasizes how important taking turns is to being fair and being a good friend.

Beginning readers will be captivated by the creatures they meet in this Spanish translation of Prehistoric Creatures. The simple text describes ancient animals that swam the seas, soared through the skies, and roamed the Earth long before people existed. Each book describes a group of dinosaurs that shared one or two fascinating features. Dazzling illustrations help bring these amazing creatures to life!

In the 1500s, European explorers arrived in Texas in search of gold and glory. The Spanish were the first Europeans to arrive. Readers get to discover early Texas history in this fascinating nonfiction book that uses colorful images, intriguing facts, supportive text, and an accommodating glossary, index, and table of contents to introduce readers to various explorers such as Christopher Columbus, Cabeza de Vaca, Francisco Vazquez de Coronado, and La Salle. Children will be excited and engaged as they read through to also learn about the many American Indian tribes of the past, including the...

Examines the nature of inclined planes and wedges, how they can reduce the amount of force necessary to perform work, and ways in which they are used.

Aislado por mar, desierto y cordillera, Chile es un lugar privilegiado por sus paisajes y pájaros sorprendentes. El libro que tienes en tus manos es una invitación a adentrarse en el mundo de las aves que habitan en el valle central de nuestro país, recorriendo su geografía desde la cordillera de los Andes hasta el mar. Este libro presenta a los PÁJAROS CHILENOS típicos de Chile Central y sus hábitats. A través de ilustraciones y diferentes relatos, te permitirá descubrir sus variadas características y comportamientos, y así explorar la forma de vida de nuestros compañeros...

[English] What is the difference between a savanna and a prairie? How do bison, zebras, and other grazers avoid hungry grassland predators? Trek across the plant-covered landscape of this book, and find out what makes grasslands one of Earth's treasures. [Spanish] ¿Qué diferencia hay entre una sabana y una pradera? ¿Cómo escapan los bisontes y las cebras de los depredadores? Camina entre los altos pastos de este libro. Descubrirás por qué los pastizales son uno de los grandes tesoros de la Tierra.