¿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.

Humans and animals can also make a great team working together. See how horses and the officers who ride them work together to keep our streets safe.

Durante un ataque sarraceno, Diego de Malagón, hijo de un posadero, es testigo del secuestro de sus hermanas. Consigue huir a Toledo donde conoce a Galib, un veterinario mudéjar de gran prestigio, que le acoge como aprendiz y le muestra el poder y la belleza de la albeitería, la ciencia que estudia la curación de los animales más importantes para los hombres: los caballos. Pero a causa de un malentendido con la esposa de Galib, Diego debe salir huyendo de nuevo. A partir de ese momento, el protagonista de esta novela hurgará en las entrañas de la biblioteca de un monasterio...

Plants are the living things that have been on the planet longer. How do they manage to protect themselves if they can't move? Explore the different mechanisms that plants use to survive in different habitats.

This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.