Cómo funcionan los ecosistemas

Ver sonreír a los niños y niñas es una bendición. Verlos contentos y disfrutando de la lectura es el mejor regalo para un padre o una madre. Mejor aún, que ellos mismos puedan realizar sus propias lecturas y aprecien la vida a través de personajes simpáticos como Rufina gallina, Tija la lagartija o el Señor Sapito. Deseo de todo corazón que puedan disfrutar de este libro con toda la familia.

Ya sea polvorosa o mojada, suave o flexible, en todas partes hay materia. ÁHasta el aire est‡ formado de materia! Mira c—mo los s—lidos, los l’quidos y los gases cambian de forma en este libro sobre la materia.

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.

It is July 4 and you are going to see the fireworks. But do you know why? It's Independence Day! Turn the pages of this book to find out why our country had to win its freedom, what happened on July 4, 1776 that makes this day special, why we watch fireworks on July 4. Each book in the Holiday Histories series describes one of America's holidays or special days. Explore the history of each day and learn the real reason why it is important. Discover what special meaning each day might have for you.