Cómo funcionan los ecosistemas

"This oversized book introduces children to the alarming number of species that are endangered, threatened or, unfortunately, extinct. It includes amphibians, birds, mammals, reptiles, and fish, devoting an entire page to each animal. Readers will learn the threats facing each one, where each one lives or lived, including the type of habitat, its diet, size, and ongoing conservation efforts."

Why did the Civil War begin? Which states were part of the Union and which were part of the Confederacy? Readers will learn the answers to these questions and more as they move through this fascinating nonfiction Spanish-translated title. The easy-to-read informational text, engaging facts, and vivid images and illustrations help highlight some of the aspects that led up to the Civil War, including slavery, the Underground Railroad, abolitionists, the Fugitive Slave Act, the Dred Scott Decision, and the Lincoln-Douglas debates. The accessible table of contents works in conjunction with the...

Aunque tener buenos amigos es una aspiración permanente, no es fácil. Para ello, hay que saber y querer tener amigos y poner los medios adecuados. La improvisación -"vivir sobre la marcha"- no da buenos resultados. Y así, todo esfuerzo para poner por obra las nociones básicas acerca de la amistad da buenos resultados. En estas páginas encontrarás esas ideas.

En la edad media, el Rey decide emprender un viaje y avisa a Lord Camdenton que parará a descansar en su castillo. Esto significa mucho trabajo para el Lord: ¡a veces el rey viaja con casi cien acompañantes! Fiesta Medieval es un precioso y entret