Los estados de la materia — Los gases

Did you know that liquids take the shape of their containers? If liquids get hot, they can become gases. Discover more interesting facts in Liquids, part of the States of Matter series of EYEDISCOVER books.

Did you know that baby butterflies look like worms with legs? Caterpillars turn into butterflies inside a shell. Discover more about these flying insects in Butterflies, part of the Life Cycles series of EYEDISCOVER books.

Did you know that pigs are some of the smartest animals on Earth? Pigs keep themselves very clean. Discover more about these farm animals in My Pig.

Nadar y leer son dos cosas muy difíciles de aprender. Da mucho miedo meterse en la piscina cuando no se hace pie o abrir un libro lleno de palabras incomprensibles. Óscar necesita ayuda para divertirse en el agua y para leer un libro de mayores, pero llegará un día en el que los brazos y las piernas se moverán al ritmo adecuado y las frases, por fin, tendrán sentido.

The nineteenth century was a time of huge growth and prosperity for California. Although the Gold Rush lasted only seven years, California provided other opportunities for those who emigrated there in search of a better life. This Interactiv-eBook focuses on the history of San Francisco, Los Angeles, Sacramento, and Fresno, and the people and events that influenced their transformations from small towns to booming cities. This nonfiction text builds literacy and social studies content knowledge through the use of intriguing primary source documents like maps, letters, images, articles, and...

This book tells the story of farmers and life on a farm. What do farmers do? What tools and equipment do they use? Who helps them? Livestock, crops and daily chores are perfectly captured in descriptive photography. With full-color, full-page photographs throughout plus straightforward and engaging text, the I Want to Be ... series is an appealing introduction to a broad spectrum of occupations. The series gives young children a realistic insight into the working day of adults. Easy-to-read captions and color photographs of women and men from different cultures help children understand what's ...

Todos los objetos, elementos o personas tienen una silueta que los define y que constituye su figura. Hay muchísimas figuras posibles, pero todas tienen unas particularidades que permiten identificarlas. Los 12 ejercicios del libro están pensados precisamente para trabajar las características de esas figuras haciendo, por ejemplo, la silueta de una silla con una serpentina, o construyendo la figura de una pelota a partir de diferentes trozos de papel rasgado. Asimismo, muchos de los ejercicios del libro se detienen en las propiedades de la figura humana para conocer sus partes más...