Experimentos sorprendentes con la luz

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.

A journey into the ocean’s depths to learn about these fascinating animals: their habitat, how they breathe and swim, and how pollution and trade affect their existence. En esta obra se describe acerca de la vida de las ballenas y delfines: De que tamano son, como son y los lugares que habitan. Los alimentos que consumen, si poseen dientes y su el tamano. A la que familia pertenecen. Sobre su respiración y formas de nadar. Sobre los bebes de las ballenas y delfines. Los lugares que recorren durante el invierno y verano.ó Los sonidos que emiten las ballenas y delfines, sus acrobacias,...

Young children are natural problem-solvers and always looking for answers, especially when it involves interesting animals. This Spanish-language edition of Fast and Flightless provides young curious readers with striking visual clues and simply written hints. Using the photos and text, readers rely on visual literacy skills, reading, and reasoning as they solve the animal mystery. Clearly written facts give readers a deeper understanding of how the animal lives. Additional text features, including a glossary and an index, help students locate information and learn new words.

From Asia to Africa, people buy and sell goods all over the world! Learn what various types of foods and goods are sold in markets from all around the globe in this fascinating, Spanish-translated nonfiction title. Featuring vibrant photographs, diagrams, and simple, informational text, readers will be engaged in other cultures' markets.