En Toda Era

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.

What is a responsibility? How can you be responsible for yourself? Read this book to learn about how and why to behave responsibly.

We often don´t stop to think about the origin of certain foods, but many of the foods we consume today only reached us as a result of great discoveries and the subsequent international commerce between east and west. This book brings us closer to the complex relations between different cultures and shows us the importance of ocean voyages in the development of international commerce.

Engineers have built some incredible things. But with every new feat, there is failure. Readers will learn about engineering feats and failures like the Titanic, the Hindenburg, the Hoover Dam, and more in this engaging, Spanish-translated nonfiction title. This book features brilliant images, charts, and intriguing facts in conjunction with informational text and mathematics skills to keep readers active and engaged.