¿Foca o león marino? (Seal or Sea Lion?)

If a person were ever face-to-face with a huge, hungry animal with sharp teeth, they probably wouldn’t care exactly what that animal was! But from a safe location, can we tell whether it was a crocodile or alligator that wanted to take a bite? By examining their jaw structure, teeth, and other physical features, we can easily tell these two animals apart! Graphic organizers and amazing images highlight each animal’s habitat and other small differences between the two fearsome creatures, showing readers just what creature is lurking below the waters.

Esta colección reúne libros únicos, con historias divertidas y educativas. En este libro se muestra, por la visión de los animales, qué el hombre hace con la naturaleza. Un poderoso mensaje que se puede ver a través de hermosas páginas ilustradas.

Deforestation, hunting and global warming have endangered countless species. The orangutan, okapi, giant panda and the blue whale are just some of the 30 species on the brink of extinction that are featured in this book. They need your help. The International Conservation Society illustrates how many of these species are left in the wild, and the latest status regarding their natural environment. You'll learn how you can aid endangered species and help sustain the ecosystems that give them life.

A researcher looks at cells under a microscope. A scientist studies bacteria in a Petri dish. A student boils liquid in a test tube. What do these things all have in common? The answer is: glass! Learn how something as simple as glass has played a huge role in scientific exploration with this fascinating Spanish Informational Text created in collaboration with the Smithsonian Institution! Build reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, this Spanish book features a hands-on STEAM challenge...

¡La Tierra es bastante increíble! Es el único planeta en nuestro sistema solar en el que los humanos podemos vivir. Desarrolle habilidades de no ficción y aprenda todo sobre nuestro planeta de origen con el vibrante glosario fotográfico de este libro y el texto en español apropiado para su edad. Earth is pretty incredible! It's the only planet in our solar system humans can live on. Build nonfiction skills and learn all about our home planet with this book's vibrant photo glossary and age-appropriate Spanish text.