La lana de la oveja

[English]Why do maple and oak trees drop their leaves in the fall? What other animals share the forest with chipmunks, deer, and snakes? Hike through this book, and find out what makes temperate deciduous forests one of Earth's treasures. [Spanish]¿Por qué al arce y al roble se les caen las hojas en el otoño? ¿Qué otros animales comparten el bosque con las ardillas listadas, los venados y las serpientes? Da un paseo por este libro. Descubrirás por qué los bosques templados son uno de los grandes tesoros de la Tierra.

Explains the basic science of flight, the problems of getting vehicles into the air, different types of engines, and aircraft design, and includes instructions for making aircraft models.

How do you truly engage students in learning history? When students make personal connections to the subject, they’re much more motivated to learn. This Spanish book provides firsthand accounts of history that give personal insights into historical events. Students will learn about the culture, history, and distinctive features of the Lakota, Cheyenne, Comanche, Pawnee, Osage, Omaha, and Crow tribes. With a visually appealing layout, this book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at their grade level. ...

In this stimulating, Spanish-translated nonfiction book, readers will discover the various types of friction--including rolling friction, sliding friction, fluid friction, and static friction--and the huge impact it has on nature, machines, and our lives. In addition, readers are encouraged to perform basic experiments to assist in the understanding of friction, kinetic energy, and water resistance. With real-life examples, colorful images, accommodating graphs and charts, and informational text, this title will inspire and engage children.