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.

[English] What is the difference between a savanna and a prairie? How do bison, zebras, and other grazers avoid hungry grassland predators? Trek across the plant-covered landscape of this book, and find out what makes grasslands one of Earth's treasures. [Spanish] ¿Qué diferencia hay entre una sabana y una pradera? ¿Cómo escapan los bisontes y las cebras de los depredadores? Camina entre los altos pastos de este libro. Descubrirás por qué los pastizales son uno de los grandes tesoros de la Tierra.

Nearly 75% of planet Earth is covered in water and 96% of it is found in the ocean. We know more about outer space than we know about the depths of the ocean, but through the use of modern technology, scientists are shedding light on the Earth’s hidden underwater world. This nonfiction Spanish book explores the Earth’s oceans in depth and introduces students to new concepts, vocabulary terms, and STEM topics. Aligned to state and national standards, the leveled text supports students reading at above-, below-, and on-grade level. The fun lab activity encourages students to think like...

This truly is a strange book. For starters, it talks to the reader. What's more, there are no colors until someone gives it color. Who is going to do this? The reader of course. What better way to do this besides with your fingers and hands? Full of tracing and marks, this story is far from a coloring book.

Las 15 B+leccionesB; magistrales que contiene este libro revolucionaron, ya en los anos sesenta, los fundamentos de la pedagogia de la musica. Por entonces, el prestigioso compositor y director de orquesta Leonard Bernstein (1918-1990) presentaba en televi