El oso panda

El primer tomo recrea los ultimos dias de Tula, la gran ciudad fundada por los toltecas. El segundo relato de esta obra se refiere a dos comunidades del valle de Mexico: Xochimilco, un pueblo agricola y Mexico-Tenochtitlan, la gran capital del imperio mexica. La narracion recrea la epoca en que muchos viajeros acudian a la gran ciudad para intercambiar sus productos.

¿Por qué se nos tapan los oídos en un elevador? ¿Qué hace que los globos de aire caliente suban al cielo? Descubre todo lo que hace el aire en este maravilloso libro.

Take a trip to the British Museum as you explore its fascinating objects and geometric shapes! This famous London museum was built for exploration - and for learning geometry. Learn about its history and artifacts as you build your geometry 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,...

Describes sexually transmitted diseases, including AIDS, syphilis, gonorrhea, and genital herpes, and discusses their medical dangers and where to get help.