Por qué algunos animales tejen telarañas (Why Animals Live in Webs)

Este libro –cuenta William H. Hodgson en su introducción a «Los piratas fantasmas»– puede ser considerado el último de un grupo de tres. El primero se publicó bajo el título de «Los botes del “Glen Carrig”»; el segundo, como «La casa en el confín de la Tierra»; por fin, este tercero, completa lo que, quizá, pueda ser considerado una trilogía; pues, aun cuando los tres difieren mucho en los contenidos, todos ellos coinciden en una determinada forma de tratar unos conceptos elementales. Con este libro, el autor cree que cierra una puerta, en cuanto a lo que a él concierne, ...

Mrs. Frizzle's class investigates the disappearance of the salmon from the sea and in the process learn about migration.

Immigrants help make the United States a special place. Learn all about the history of immigration to the United States as you sharpen your data measurement skills! This Spanish math book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, sidebars, and math diagrams extend the learning experience and provide multiple...

The Mapuches established themselves in the eleventh century in what is now Argentina and Chile. Their literature is very rich and oral in nature, which highlights the legends that speak of their Gods, beliefs, customs, and stories of their encounters with enemies.