¿Caimán o cocodrilo? (Alligator or Crocodile?)

What’s the difference between a seal and a sea lion? These “second cousins” of the sea look similar, but there are many ways to tell these creatures apart. From ear shape to the noises they make to communicate, seals and sea lions are amazing creatures with both shared features and many truly unique attributes. They both share an ocean habitat, but when readers take a closer look, it’s easy to discover how they each fight off predators, mate, and raise their young in different ways. Captivating full-color photographs help to bring these marvelous mammals to vivid life.

We use machines every day, but most of us don't understand how they work. When they break down, most of us have no idea how to fix them. Mechanics are the masters of machines. Readers learn that mechanics work on vehicles, including cars, boats, and buses. They use special tools to take them apart and fix what's wrong, and they use their experience and technology to diagnose problems. They often work long hours, sometimes in bad weather, to get us where we need to go. Your readers will see that mechanics keep our world moving and growing.

Every living thing you see is made up of tiny cells. Each of these cells has its own job to do. They work together to do everything an organism needs to stay alive. That's why biologists often call them the "building blocks of life." Learn all about plant and animal cell theory and structure with this Spanish science reader that brings the power of science and informational text to students at a level they can understand. Introduce students to STEM topics and new vocabulary terms like osmosis, diffusion, organelles, and active and passive transport with this nonfiction book that is aligned to ...

Pese al alto valor de la poesía de Antonio Machado (1875-1939) reflejado en «Campos de Castilla» (BA 0405), «Soledades. Galerías. Otros poemas» (BA 0406) y en «Poesía» (BA 0408), publicadas en esta biblioteca de autor , su obra no se agota en el campo de la lírica, sino que se extiende al terreno de la especulación filosófica, la indagación moral, las valoraciones estéticas y la reflexión política. JUAN DE MAIRENA (1936) representa, en este sentido, la cristalización de uno de los idearios más ricos, profundos y ambiciosos de nuestras letras. La presente edición, preparada...

Este libro ilustrado para niños contiene juegos con dados, cartas, matemáticas y otras cosas para revelar los poderes mentales que poseen los lectores.