Las cadenas alimentarias en el desierto (Desert Food Chains)

What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how matter changes state are conveyed through a series of easy-to-do experiments.

From Stonehenge to the Bermuda Triangle, there are many places on Earth that remain a mystery to scientists! Readers will discover these curious places--and more!--as they move through this fascinating, Spanish-translated nonfiction title. This mysterious book features detailed images, informational text, and stimulating facts and theories in conjunction with upper-level features, such as chapter format, a glossary of terms, and an index.

Invite readers along on the preparations for a soccer tournament! With informational, Spanish-translated text, vibrant photos and charts, children are engaged from cover to cover while utilizing mathematical skills to increase understanding of all aspects of soccer, including sportsmanship and tournaments.

Santiago Carrillo narra en esta autobiografía su vida política a lo largo del siglo XX, y las relaciones que mantuvo con importantes políticos de ámbito nacional e internacional, entre los que cabe destacar a Manuel Azaña, Dolores Ibárruri, Juan Carlos I, Stalin, Fidel Castro, el Che Guevara, Mao Tse Tung, Saddam Hussein o Salvador Allende.